Category Archives: News

Zoo Tools: A New Way to Analyze, View and Share Data

Since the very first days of Galaxy Zoo, our projects have seen amazing contributions from volunteers who have gone beyond the main classification tasks. Many of these examples have led to scientific publications, including Hanny’s Voorwerp, the ‘green pea’ galaxies, and the circumbinary planet PH1b.

One common thread that runs through the many positive experiences we’ve had with the volunteers is the way in which they’ve interacted more deeply with the data. In Galaxy Zoo, much of this has been enabled by linking to the Sloan SkyServer website, where you can find huge amounts of additional information about galaxies on the site (redshift, spectra, magnitudes, etc). We’ve put in similar links on other projects now, linking to the Kepler database on Planet Hunters, or data on the location and water conditions in Seafloor Explorer.

The second part of this that we think is really important, however, is providing ways in which users can actually use and manipulate this data. Some users have been already been very resourceful in developing their own analysis tools for Zooniverse projects, or have done lots of offline work pulling data into Excel, IDL, Python, and lots of other programs (see examples here and here). We want to make using the data easier and available to more of our community, which has led to the development of Zoo Tools (http://tools.zooniverse.org). Zoo Tools is still undergoing some development, but we’d like to start by describing what it can do and what sort of data is available.

An Example

Zoo Tools works in an environment which we call the Dashboard – each Dashboard can be thought of as a separate project that you’re working on. You can create new Dashboards yourself, or work collaboratively with other people on the same Dashboard by sharing the URL.

Zoo Tools Main Page

Create a New Dashboard

Within the Dashboard, there are two main functions: selecting/importing data, and then using tools to analyze the data.

The first step for working with the Dashboard is to select the data you’d like to analyze. At the top left of the screen, there’s a tab named “Data”. If you click on this, you’ll see the different databases that Zoo Tools can query. For Galaxy Zoo, for example, it can query the Zooniverse database itself (galaxies that are currently being classified by the project), or you can also analyze other galaxies from the SDSS via their Sky Server website.

Import Data from Zooniverse

Clicking on the “Zooniverse” button, for example, you can select galaxies in one of four ways: a Collection (either your own or someone else’s), looking at your recently classified galaxies, galaxies that you’ve favorited, or specific galaxies via their Zooniverse IDs. Selecting any of these will import them as a dataset, which you can start to look at and analyze. In this example we’ll import 20 recent galaxies.

Import 20 Recents

After importing your dataset, you can use any of the tools in Dashboard (which you can select under “Tools” at the top of the page) on your data. After selecting a tool, you choose the dataset that you’d like to work with from a dropdown menu, and then you can begin using it. For example: if I want to look at the locations of my galaxies on the sky, I can select the “Map” tool. I then select the data source I’d like to plot (in this case, “Zooniverse–1”) and the tool plots the coordinates of each galaxy on a map of the sky. I can select different wavelength options for the background (visible light, infrared, radio, etc), and could potentially use this to analyze whether my galaxies are likely to have more stars nearby based on their position with respect to the Milky Way.

The other really useful part is that the tools can talk to each other, and can pass data back and forth. For example: you could import a collection of galaxies and look at their colour in a scatterplot. You could then select only certain galaxies in that tool, and then plot the positions of those galaxies on the map. This is what we do in the screenshots below:

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Making Data Analysis Social

You can also share Dashboards with other people. From the Zoo Tools home page you can access your existing dashboards as well as delete them and share them with others. You can share on Twitter and Facebook or just grab the URL directly. For example, the Dashboard above can be found here – with a few more tools added as a demonstration.

Sharing a Dashboard

This means that once you have a Dashboard set up and ready to use, you can send it to somebody else to use too. Doing this will mean that they see the same tools in the same configuration, but on their own account. They can then either replicate or verify your work – or branch off and use what you were doing as a springboard for something new.

What ‘Tools’ Are There?

Currently, there are eight tools available for both regular Galaxy Zoo and the Galaxy Zoo Quench projects:

  • Histogram: makes bar charts of a single data parameter
  • Scatterplot: plot any two data parameters against each other
  • Map: plot the position of objects on the sky, overplotted on maps of the sky at different wavelengths (radio, visible, X-ray, etc.)
  • Statistics: compute some of the most common statistics on your data (eg, mean, minimum, maximum, etc).
  • Subject viewer: examine individual objects, including both the image and all the metadata associated with that object
  • Spectra: for galaxies in the SDSS with a spectrum, download and examine the spectrum.
  • Table: List the metadata for all objects in a dataset. You can also use this tool to create new columns from the data that exists – for example, take the difference between magnitudes to define the color of a galaxy.
  • Color-magnitude: look at how the color and magnitude of galaxies compare to the total population of Galaxy Zoo. A really nice way of visualizing and analyzing how unusual a particular galaxy might be.

We have one tool up and running for Space Warps called Space Warp Viewer. This lets users adjust the color and scale parameters of image to examine potential gravitational lenses in more detail.

Snapshot Serengeti Dashboard

Finally, Snapshot Serengeti has several of the same tools that Galaxy Zoo does, including Statistics, Subject Viewer, Table, and Histogram (aka Bar Graph). There’s also Image Gallery, where you can examine the still images from your datasets, and we’re working on an Image Player. There’s a few very cool and advanced tools we started developing last week – they’re not yet deployed, but we’re really excited to let you follow the activity over many seasons or by focusing on particular cameras. Stay tuned. You can see an example Serengeti Dashboard, showing the distribution of Cheetahs, here (it’s also shown in the screenshot above).

We hope that Zoo Tools will be an important part of all Zooniverse projects in the future, and we’re looking forward to you trying them out. More to come soon!

Galaxy Zoo Quench: A New Kind of Citizen Science

A new ‘mini’ project went live yesterday called Galaxy Zoo Quench. This project involves new images of 6,004 galaxies drawn from the original Galaxy Zoo. As usual, everyone is invited to come and classify these galaxies, but this project has a twist that makes it special! We hope to take citizen science to the next level by providing the opportunity to take part in the entire scientific process – everything from classifying galaxies to analyzing results to collaborating with astronomers to writing a scientific article!

Galaxy Zoo Quench

Galaxy Zoo Quench is examining a sample of galaxies that have recently and abruptly quenched their star formation. These galaxies are aptly named Post-Quenched Galaxies. They provide an ideal laboratory for studying galaxy evolution. So that’s exactly what we want to do: with the help of the Zooniverse community. We hope you’ll join us as we try out a new kind of citizen science project. Visit http://quench.galaxyzoo.org to learn more.

The entire process of classifying, analyzing, discussing, and writing the article will take place over an ~8-12 week period. After classifying the galaxies, Quench volunteers can use tools.zooniverse.org to plot the data and look for trends. We also have a special Quench Talk forum to discuss and identify key results to include in the paper – above you can see examples of some of the cool objects people have already found and discussed.

Have questions about the project? Leave a comment here or ask us on Twitter (@galaxyzoo) or on the Galaxy Zoo Facebook page. In case you’re worried: the regular Galaxy Zoo will continue as normal.

Now go visit http://quench.galaxyzoo.org and start classifying!

Welcome to the Worm Watch Lab

Today we launch a new Zooniverse project in association with the Medical Research Council (MRC) and the Medical Research Foundation: Worm Watch Lab.

We need the public’s help in observing the behaviour of tiny nematode worms. When you classify on wormwatchlab.org you’re shown a video of a worm wriggling around. The aim of the game is to watch and wait for the worm to lay eggs, and to hit the ‘z’ key when they do. It’s very simple and strangely addictive. By watching these worms lay eggs, you’re helping to collect valuable data about genetics that will assist medical research.

Worm Watch Lab

The MRC have built tracking microscopes to record these videos of crawling worms. A USB microscope is mounted on a motorised stage connected to a computer. When the worm moves, the computer analyses the changing image and commands the stage to move to re-centre the worm in the field of view. Because the trackers work without supervision, they can run eight of them in parallel to collect a lot of video! It’s these movies that we need the public to help classify.

By watching movies of the nematode worms, we can understand how the brain works and how genes affect behaviour. The idea is that if a gene is involved in a visible behaviour, then mutations that break that gene might lead to detectable behavioural changes. The type of change gives us a hint about what the affected gene might be doing. Although it is small and has far fewer cells than we do, the worm used in these studies (called C. elegans) has almost as many genes as we do! We share a common ancestor with these worms, so many of their genes are closely related to human genes. This presents us with the opportunity to study the function of genes that are important for human brain function in an animal that is easier to handle, great for microscopy and genetics, and has a generation time of only a few days. It’s all quite amazing!

To get started visit www.wormwatchlab.org and follow the tutorial. You can also find Worm Watch Lab on Facebook and on Twitter.

52 Years of Human Effort

At ZooCon last week I spoke about the scale of human attention that the Zooniverse receives. One of my favourite stats in this realm (from Clay Shirky’s book ‘Cognitive Surplus’) is that in the USA, adults cumulatively spend about 200 billion hours watching TV every year. By contrast it took 100 million hours of combined effort for Wikipedia to reach its status as the world’s encyclopaedia.

In the previous year people collectively spent just shy of half a million hours working on Zooniverse projects. Better put, the community invested about 52 years worth of effort[1]. That’s to say that if an individual sat down and did nothing but classify on Zooniverse sites for 52 years they’d only just have done the same amount of work as our community did between June 2012 and June 2013. The number is always rising too. Citizen science is amazing!

Another way of thinking about it is to convert this time into Full Time Equivalents (FTEs). One person working 40 hours per week, for 50 weeks a year works for 2000 hours a year – that’s 1 FTE. So our 460,000 hours of Zooniverse effort are equivalent to 230 FTEs. It’s as if we had a building with 230 people in who only came in every day to click on Zooniverse projects.

Zooniverse Effort Distribution to June 2013

This amazing investment by the community is not broken down evenly of course, as the above ‘snail’ chart shows. In fact Planet Hunters alone would occupy 62 of the people in our fictional building: the project took up 27% of the effort in the last year. Galaxy Zoo took 17%, which means it had almost 9 years of your effort all to itself. Planet Four had a meteoric launch on the BBC’s Stargazing Live less than six months ago and since that time it has gobbled up just over 5 years of human attention – 10% of the whole for the past year.

What’s wonderful is that our 230 metaphorical workers, and the 52 years they represent, are not confined to one building or one crazed click-worker. Our community is made of hundreds of thousands of individuals across the world – 850,000 of whom have signed up through zooniverse.org. Some of them have contributed a single classification, others have given our researchers far, far more of their time and attention. Through clicking on our sites, discussing ideas on Talk, or just spreading the word: Zooniverse volunteers are making a significant contribution to research in areas from astronomy to zoology.

Congratulations to everyone who’s taken part and let’s hope this number increases again by next year!

[1] In my ZooCon talk I incorrectly gave the figure of 35 years. This was wrong for two reasons; firstly, I had neglected Andromeda Project, Planet Four and Snapshot Serengeti for technical reasons. Secondly I had calculated the numbers incorrectly, in my rush to get my slides ready, and I underestimated them all by about 20%.

Anyone Fancy an Asteroid?

This could be the Asteroid Zoo logo
This might be the Asteroid Zoo logo

Anyone interested in astronomy on the web will be aware of the fabulous success of Planetary Resources’ fundraising effort to build and launch the ARKYD space telescope. They’ve already raised more than a million dollars – helped in part by a cunning plan to let you take a picture of yourself in space – but they’re not stopping there. With three days to go, we’re delighted to announce that they’re going to try and help us help Zooniverse volunteers hunt for potentially hazardous asteroids.

The latest stretch goal is to support the development by the Zooniverse of a citizen science asteroid hunt. If the new target is hit, we’ll build a system that uses more than 3 million images, taken data from the Catalina Sky Survey – the survey responsible for nearly half of the near Earth asteroid discoveries in the last fifteen years. We know there are asteroids out that are waiting to be discovered, and we’re willing to bet that the existing routines used to scan through the survey data didn’t find them all.

Recent discoveries of near-Earth objects; Catalina's the big purple part.
Recent discoveries of near-Earth objects; Catalina’s the big purple part.

Anyone who’s followed the Zooniverse over the last few years knows that we believe in doing projects that make authentic contributions to science, and so I’m especially pleased that the project with Planetary Resources is also focused on improving machine learning solutions to asteroid hunting. Rather like our supernova project, an ideal outcome would be to use the classifications provided by volunteers to improve automated searching and suggest new methods by which machines might take up the strain. In the meantime, though, there are new (small) worlds to find – with your help, we’ll be launching the search for them soon.

I’ve put my money where my mouth is already, and if you can afford it then I hope you’ll follow the link and donate so we can all go asteroid hunting. You can also watch their Kickstarter video to see what they’re trying to do.

PRI-KS-Banner-428x60

How the Zooniverse Works: Tools and Technologies

In my last post I described at length the domain model that we use to describe conceptually what the Zooniverse does. That wouldn’t mean much without an implementation of that model and so in this post I’m going to describe some of the tools and technologies that we use to actually run our citizen science projects.

The lifecycle of a Zooniverse project

Let’s think a little more about what happens when you visit a project such as Snapshot Serengeti. Ignoring all of the to-and-fro that your web browser does to work out where the domain name ‘snapshotserengeti.org’ points to, once it’s figured this and a few other details out you basically get sent a website that your browser renders for you. For the website to function as a Zooniverse project a few things are essential:

  1. You need to be able to view images (or listen to audio or watch a video) that we and the science team need your help analysing.
  2. You need to be able to log in with your Zooniverse account.
  3. We need to capture back what you said when doing the citizen science analysis task.
  4. Save out favourite images to your profile.
  5. View recent images you’ve seen in your profile.
  6. Discuss these images with the community.

It turns out that pretty much all of the functionality mentioned above is for us delivered by an application we call Ouroboros as an API layer and a website (such as Snapshot Serengeti) talking to it.

Screen Shot 2013-06-26 at 8.20.51 AM

Ouroboros – or ‘why the simplest API that works is probably all you need’.

So what is Ouroboros? It provides an API (REST/JSON) that allows you to build a Zooniverse project that has all of the core components (1-6) listed above. Technology-wise it’s a custom Ruby on Rails application (Rails 3.2) that uses MongoDB to store data and Redis as a query cache all running on Amazon Web Services. It’s probably utterly useless to anyone but us but for our needs it’s just about perfect.

Screen Shot 2013-06-26 at 8.01.30 AM

At the Zooniverse we’re optimised for a few different things. In no particular order of priority they are:

  1. Volume – we want to be able to build lots of projects.
  2. Science – we want it to be easy to do science with the efforts of our community.
  3. Scale/performance – we want to be able to have millions of people come to our proejcts and them to stay up.
  4. Availability – we’d prefer our websites to be ‘up’ and not ‘down’.
  5. Cost – we want to keep costs at a manageable level.

Pretty much all of these requirements point to having a shared API (Ouroboros) that serves a large number of projects (I’ll argue #4 in the pub with anyone who really wants to push me on it).

Running a core API that serves many projects makes you take the maintenance and health of that application pretty seriously. Should Ouroboros throw a wobbly then we’d currently take out about 10 Zooniverse projects at once and this is only set to increase. This means we’ve thought a lot about how to scale the application for times when we’re busy and we also spend significant amounts of time monitoring the application performance and tuning code where necessary. I mentioned that cost is a factor – running a central API means that when the Zooniverse is quiet and there aren’t many people about we can scale back the number of servers we’re running (automagically on Amazon Web Services) to a minimal level.

We’ve not always built our projects this way. The original Galaxy Zoo (2007) was an ASP/web forms application, projects between Galaxy Zoo 2 and SETI Live were all separate web applications, many of them built using an application called The Juggernaut. Building standalone applications every time not only made it difficult to maintain our projects but we also found ourselves writing very similar (but subtly different) code many times between projects, code for things like choosing which Subject to show next.

Ouroboros is an evolution of our thinking about how to build projects, what’s important and generalisable and what isn’t. At it’s most basic it’s a really fast Subject allocator and Classification collector. Our realisation over the last few years was that the vast majority of what’s different about each project is the user experience and classification interface and this has nothing to do with the API.

Subjects out, Classifications back in.
Subjects out, Classifications back in.

The actual projects

The point of having a central API is that when we want to build a new project we’re already working with a very familiar toolset – the way we log people in, do signup forms, ask for a Subject, send back Classifications – all of this is completely standard. In fact if you’re building in JavaScript (which we almost always are these days) then there’s a client library called ‘Zooniverse’ (meta I know) available here on GitHub.

Having a standard API and client library for talking to it meant that we built the Zooniverse project Planet Four in less than 1 week! That’s not to say it’s trivial to build projects, it’s definitely not, but it is getting easier. And having this standardised way of communicating with the core Zooniverse means that the bulk of the effort when building Planet Four was exactly where it should be – the fan drawing tools – the bit that’s different from any of our other projects.

Screen Shot 2013-06-26 at 8.19.22 AM

So how do we actually build our projects these days? We build our projects as JavaScript web applications using JavaScript web frameworks such as Spine JS, Backbone or something completely custom. The point being, that all of the logic for how the interface should behave is baked into the JavaScript application – Ouroboros doesn’t try and help with any of this stuff.

Currently the majority of our projects are hosted using the Amazon S3 static website hosting service. The benefits of this are numerous but key ones for us are:

  1. There’s no webserver serving the site content, that is http://www.galaxyzoo.org resolves to an S3 bucket. When you access the Galaxy Zoo site S3 does all of the hard work and we just pay for the bandwidth from S3 to your computer.
  2. Deploying is easy. When we want to put out a new version of any of our sites we just upload new timestamped versions of the files and your browser starts using them instead.
  3. It’s S3 – Amazon S3 is a quite remarkable service –  a significant fraction of the web is using it. Currently hosting more than 2 trillion (yes that’s 12 zeroes) objects and regularly serving more than 1 million requests for data per second the S3 service is built to scale and we get to use it (and so can you).

Amazon S3 is a static webhost (i.e. you can’t have any server-side code running) so how do we make a static website into a Zooniverse project you can log in to when we can’t access database records? The main site functions just fine – these JavaScript applications (such as the current Galaxy Zoo or any recent Zooniverse project) implement what is different about the project’s interface. We then use a small invisible iFrame on each website that actually points to api.zooniverse.org which is Ouroboros. When you use a login form we actually set a cookie on this domain and then send all of our requests back to the API through this iFrame. This approach is a little unusual and with browsers tightening up the restrictions on third-party cookies if looks like we might need to swap it out for a different approach but for now it’s working well.

Summing up

If you’re like me then when you read something you read the opening, look at the pictures and then skip to the conclusions. I’ll summarise here just incase you’re doing that too:

In the Zooniverse there’s a clear separation between the API (Ouroboros) and the citizen science projects that the community interact with. Ouroboros is a custom-built, highly scalable application built in Ruby on Rails, that runs on Amazon Web Services and uses MongoDB, Redis and a few other fancy technologies to do its thing.

The actual citizen science projects that people interact with are these days all pure JavaScript applications that are hosted on Amazon S3 and they’re pretty much all open source. They’re generally still bespoke applications each time but share common code for talking to Ouroboros.

What I didn’t talk about in this post are the hardest bits we’ve solved in Ouroboros – namely all of the logic about how to make finding Subjects for people quickly and other ‘smart stuff’. That’s coming up next.

Putting the ‘citizen’ in ‘citizen science’

I was slightly surprised to see my twitter feed this morning filling up with comments about how the term ‘citizen’ appears in writing about science, and about public engagement with science. This seems to be coming from Roland Jackson’s post in response to the publication of a report called ‘What publics? When?’ from Sciencewise, an organisation that gives advice on science policy to government. Roland’s point is that perhaps the reason we get ourselves in a tangle when talking about public engagement is the word ‘public’, thinking that ‘citizen’ does a better job of breaking down the divide between ‘us’ doing the engagement and the ‘public’ being engaged. (There’s another engaging comparison on Nottingham’s ‘Making Science Public’ blog.)

In such contexts, I reckon ‘citizen’ comes up most often in ‘citizen science’, and I thought it might be interesting to say something about our use of the term. It’s how we describe our projects in papers, and we chose it mostly because we didn’t like the term ‘crowdsourcing’, which never seem adequate for projects which very quickly demonstrated that they could grow way beyond simple requests for a community to complete a task. We quickly realised we wanted people to make discoveries, to follow them up themselves and to chase down their own research questions and crowdsourcing just doesn’t describe that. I also liked the fact that anyone – professional or amateur, project designer or participant – could be a citizen scientist.

We clearly weren’t that confident, though. Although the core collaboration that builds and runs the Zooniverse is the Citizen Science Alliance, we’ve mostly reserved that term for grant applications rather than using in the real word. (Let along the problems of being a citizen science group which produces humanities projects either deliberately or accidentally.) This reticence isn’t misplaced; it reflects my firm belief that noone in the history of the world has ever set down at a computer, opened their web browser and thought ‘I’m a citizen scientist. Let’s do some citizen science’. Zooniverse participants are fans of one or more of our projects, and they tend to have stumbled in and then found a comfortable environment where they can do exciting things, rather than started off by looking for a science project. (This is also, I think, reflected in the lack of traffic we get from citizen science portals like SciStarter.)

‘Citizen’ science, from this perspective isn’t any more inclusive than talking about ‘public engagement’. The most common alternative (‘PPSR’ or Public Participation in Scientific Research) doesn’t help either. If names are important, we need a new one for this thing that we’re doing, but as the person who has been most consistently wrong about naming Zooniverse projects (I voted against Galaxy Zoo, for starters!) I’m the last person to ask. Maybe we should crowdsource a solution….

Chris

PS I’m reminded of this slide deck from Arfon which proposes CBSR (Community Based Scientific Research) and PPFCSM (Public Participation as a Fundamental Component of the Scientific Method), although I think he’s kidding on the last one.

Live from ZooCon

Hello for the Martin Wood Lecture Theatre in Oxford’s Department of Physics which is playing host to a crowd of Zooniverse volunteers and project members for ZooCon13. We’re recording the talks for later broadcast, but as a sneak preview I thought I’d liveblog the event.

Talk 1 – SpaceWarps

We’re kicking off with Aprajita Verma from Oxford and from Space Warps, the newest Zooniverse astronomy project. As is traditional when talking about gravitational lensing – the bending of light by matter, she’s using Phil Marshall’s Galaxy in a Wine Glass video.

Galaxy In a Wine Glass

SpaceWarps is much needed – LSST, the next generation of survey telescope, will produce something like 10000 galaxy scale lenses. It’s designed to map a very wide area of sky, which is perfect for finding rare things like lenses – and this will produce a lot of work as traditional lens hunting is very labour intensive. Not only do they need to be found, but they then need to be modeled.

There are three lenses in this image - one real, and two simulated. Spotting the difference is hard...
There are three lenses in this image – one real, and two simulated. Spotting the difference is hard…

Luckily – we have effort! 2 million 6 million classifications have been recorded already from over 8000 people. Particularly pleasing for me is that 40% of those people are discussing things on Talk – this is essential as lenses are complicated things and the interesting ones are going to be found through discussion. The team are doing dynamic assessment of the results, retiring images that no longer need classification – I especially liked their division of classifiers into ‘Optimists’ – who get lenses right but also get excited about lots of things that aren’t lenses – ‘Pessimists’ – who correctly dismiss non-lenses but get rid of lenses too – the ‘Astute’, who get everything right and the ‘Obtuse’, those who get everything wrong. Luckily, we have lots of astute classifiers and almost none who are obtuse, as evidenced by a sneak preview of the first few discoveries (more on those next week).

Talk 2 – Cosmic Evolution from Galaxy Zoo

Next up is Karen Masters of Portsmouth and Galaxy Zoo, talking about science results from the Zooniverse’s oldest project. It’s already clear there is lots of ground to cover in this conference and Karen’s bounding through a brief history of observational astronomy, noting the conceptual leap required to go from thinking about the Milky Way, our galaxy, and an expanding Universe filled with billions of the blighters. Karen just showed a cool movie showing the parts of the sky that have been mapped by the Sloan Digital Sky Survey, which provided images for the early incarnations of Galaxy Zoo.

A Galaxy in need of classifications.
A Galaxy in need of classifications.

In going through the history of Galaxy Zoo, Karen reminds me that the original BBC news story on Galaxy Zoo claims that we hope that 30,000 people will eventually take part. We smashed that on day one if I remember correctly. (There’s also a factual error in that news story – if anyone tells me what it is via Twitter (@chrislintott) or in person they can have a pint). While I relieve ancient history, Karen’s talking about her work on red spirals: most spirals are blue, but Galaxy Zoo helped us find lots of red ones and Karen says that the Milky Way may even be on its way to becoming one. The work on the red spirals was part of a serious shift in how we think about galaxy formation – a few years back that story was all about mergers but now it’s thought that lots of galaxies form and evolve (including fading from being a blue spiral to a red spiral) in slower, less spectacular ways.

Of course, one of the advantages of citizen science that Galaxy Zoo demonstrated was the ability of classifiers to discover the weird and wonderful. Recent examples include the bulgeless galaxies – spirals which are guaranteed not to have had a merger within the last few billion years – and a set of galaxies (mostly red spirals!) with massive bars at their centre. In even better news, we have time on the Very Large Array (I REPEAT – WE HAVE TIME ON THE VERY LARGE ARRAY!) to follow up on these things.

WE GOT TIME ON THE VERY LARGE ARRAY (this is a picture of some of it)
WE GOT TIME ON THE VERY LARGE ARRAY (this is a picture of some of it)

I’m really quite excited about the VLA. I’ve always wanted to use it.

Talk 3 – New Uses for Old Weather

We’re taking a break from astronomy with Philip Brohan from the Old Weather project – he’s explaining that scientists need historical observations to constrain their models of how the climate behaves. Lacking the ability to stick a weather satellite in the Tardis and head back in time, we need to scrabble around for old records, an idea that dates back to Beaufort of wind scale fame.

Philip in the gloaming, beneath an Old Weather slide.
Philip in the gloaming, beneath an Old Weather slide.

This is great, but the supercomputers can’t read the 73 million logbook pages we’d like to sort through – hence the need for volunteers. So far more than a million logbook pages have been processed by the project – a small fraction of the total needed but a very useful quantity! Most of these volunteers are attracted by the historical information that the logs fortuitously contain – Philip is currently beneath a slide showing a log book containing both the information that the ship’s company are fitted with seal-skin boots, and that 23 dogs are received on board. (Why? Surely not for food…).

It’s all got a bit gruesome now – six dead bodies are being placed in alcohol. Luckily we’re swiftly on to HMS Tarantula, where their anemometer is infested with ants. The current set of logbooks have more famous events; in particular, the logbooks of the Jeannette show the discovery of the Arctic island now named after it (upon which nothing but ice sheets grow). The fact that we have these logbooks at all is a miracle; the ship was crushed by the ice and the crew (most of whom perished) chose to carry the scientific records with them as they struggled to safety.

Images from and about the Jeanette, including in the bottom left an artist's impression of the chest of logbooks being saved.
Images from and about the Jeanette, including in the bottom left an artist’s impression of the chest of logbooks being saved.

As well as the climate and the history, Phil says, the third important aspect of Old Weather is the people. The project’s made particularly good use of the forum, which has steered the project in new directions and provided a home for discussion of things we never thought to look for, as well as art and verse. The latter was particularly inspired by the tragic loss of the chocolate aboard the HMS Manuta. Before rolling the credits listing his more than 17,000 collaborators, Philip ended these tales by noting that to make a serious dent on the archives we need to speed up by a factor of ten, a challenge the Zooniverse is happy to accept.

Talk 4 – The Future of Galaxy Zoo

Back to the Universe now, and Oxford’s Brooke Simmons is able to start her talk on what’s coming up for Galaxy Zoo by reminding the crowd that the data release paper for the second version of Galaxy Zoo is now with the referee. At about 30 pages, it’s as short as it could possibly be, showing the amount of effort that goes into dealing with classifications received via a large citizen science project.

Brooke’s now explaining the need – with Galaxy Zoo trying to reach back to a time not that long after the Big Bang – for us to use all sorts of tests to understand how our classifications work. Showing images of the same galaxies shifted to higher and higher redshifts (further and further away) it’s clear that classifications will change just because it’s harder to see what’s going on when galaxies get further away. We’re also playing with supercomputer simulations of the evolution of galaxies which shows how things change over time.

It’s not all about simulations, though – we’re thinking about moving beyond the optical range of the spectrum and looking at galaxies in the ultraviolet and infrared. The former, from a satellite called GALEX, shows only the youngest starts, the latter, from a survey called UKIDSS which covers about a third of the Sloan area, the dust and older stars. Also on the agenda are more advanced tools, like those which power the Galaxy Zoo Navigator which allows primarily school groups to look at the statistics of their classifications.

Correction I wasn’t listening properly to Aprajita; Spacewarps got 2 million classifications in the first week, and at the time of ZooCon was over 6 million. I’ve corrected the post. 1st July 2013.

Got An Idea for a Zooniverse Project? Propose One

For more than a year, we’ve been openly accepting proposals for new Zooniverse projects and this has brought to life projects such as Seafloor Explorer, Snapshot Serengeti, Notes from Nature and Space Warps.

Yesterday, five Zooniverse projects were featured in The Biologist’s 10 Great Citizen Science Projects – several of them were ideas proposed by researchers we had never met before they came to us and said ‘hey, I have a cool idea for a project‘. We’ve also recently seen articles about how the Zooniverse might be able to help in a crisis and how we provide an excellent avenue for proactive procrastination. Citizen science projects are wide and varied and lots of researchers have great ideas.

So this is a good time to remind everyone that we want to hear from researchers with ideas for Zooniverse projects. If that’s you: propose a project! We have funding from the Alfred P. Sloan Foundation to build your great ideas and work with you to further science. We also have an incredibly talented team of designers, developers, educators and researchers who want to make your idea into an awesome new Zooniverse project.

If you want to know more about this, you can get in touch with any of the team or via our general email address or on Twitter @the_zooniverse. We’re currently working on projects that were proposed earlier this year and we’ll be announcing them soon. Maybe yours will be next?

New Project: Join the Search for ‘Space Warps’

Gravitational lenses – or ‘space warps’ – are created when massive galaxies cause light to bend around them such that they act rather like giant lenses in space. By looking through data that has never been seen by human eyes, our new Space Warps project is asking citizen scientists to help discover some of these incredibly rare objects. We need your help to spot these chance-alignments of galaxies in a huge survey of the night sky. To take part visit www.spacewarps.org.

A Gravitational Lens

Gravitational lenses help us to answer all kinds of questions about galaxies, including how many very low mass stars such as brown dwarfs – which aren’t bright enough to detect directly in many observations – are lurking in distant galaxies. The Zooniverse has always been about connecting people with the biggest questions and now, with Space Warps, we’re taking our first trip to the early Universe. We’re excited to let people be the first to see some of the rarest astronomical objects of all!

The Space Warps project is a lens discovery engine. Joining the search is easy: when you visit the website you are given examples of what space warps look like and are shown how to mark potential candidates on each image. The first set of images to be inspected in this project is from the CFHT (Canada-France-Hawaii Telescope) legacy survey.

Computer algorithms have already scanned the images, but there are likely to be many more space warps that the algorithms have missed. We think that only with human help will we find them all. Realistic simulated lenses are dropped into some images to help you learn how to spot them, and reassure you that you’re on the right track. Previous studies have shown that the human brain is better at identifying complex lenses than computers are, and we know at the Zooniverse that members of the public can be at least as good at spotting astronomical objects as experts! We’re going to use the data from citizen scientists to continuously train computers to become better space warp spotters.

This is a really exciting project and you can read more on the Space Warps blog. As with our other projects it can also be found on Twitter (@SpaceWarps), on Facebook and you can discuss any interesting objects you find on Space Warps Talk. We’re really excited about this project and think you’ll be able to make some amazing discoveries through it.