Inspired by Lord Alfred Tennyson’s Locksley Hall, on Planet Four Talk Pete (p.titchin) reflected on the arrival of Martian Southern Spring. We thought it was lovely and wanted to share with all of you. Thanks Pete:
In the Spring, the sunrise heralds changes on the Martian ice: In the Spring, a P4 classifier’s fancy lightly turns to thoughts of —-SUBLIMATION!.
Add your own verses in the comments or on Talk.
Today marks the first anniversary of the launch of the Zooniverse Project Builder Platform and with that today also marks the 1st birthday of Planet Four: Terrains. You can read the blog post by Zooniverse PI Chris Lintott from that day. We were thrilled to have the opportunity to create this project due to the capabilities offered with the new Zooniverse project builder. Planet Four: Terrains is truly a project we wouldn’t have created without it; many thanks needs to go to the Zooniverse development team who created and continue to support and enhance the project builder.
When we launched Planet Four: Terrains, we really didn’t know what we were going to find. The science team thought the project would discover a few interesting areas with spiders to follow-up. An Earth year later, 10,000+ people have effectively moved a NASA spacecraft and decided where it will image! Now we have 20+ regions that were forwarded to the HiRISE team and ultimately selected to be imaged by the HiRISE camera. HiRISE aboard Mars Reconnaissance Orbiter will examine the areas in more detail and for many see how they evolve with multiple observations spread over the coming Spring and Summer on the Martian South Pole. This is incredible! HiRISE has ~20x higher resolution than CTX subimages shown on the site, so we should get exquisite detail of the spider channels and any seasonal fans and blotches that form. Next week marks the official start of Spring and the return of the Sun to the South Pole of Mars. As the lighting improves with the ever increasing sunlight, the first HiRISE images from these new targets should start coming in soon, we hope. Stay tuned to this space for updates!
Thank for your time and effort on Planet Four: Terrains. We couldn’t do this without you. As our way of saying thank you, we’ve created a collection of all the subject images selected for high spatial resolution HiRISE imaging. You can peruse it here. With any luck in a few weeks, we’ll be able to share some of the first HiRISE images of these areas from this Mars Year’s seasonal monitoring campaign.
Help celebrate Planet Four: Terrains’ first birthday today by classifying images today at http://terrains.planetfour.org
Today we have a post by Dr. Candice (Candy) Hansen, principal investigator (PI) of Planet Four and Planet Four: Terrains. Dr. Hansen also serves as the Deputy Principal Investigator for HiRISE (the camera providing the images of spiders, fans, and blotches seen on the site). She is also a Co-Investigator on the Ultraviolet Imaging Spectrograph on the Cassini spacecraft in orbit around Saturn. Additionally she is a member of the science team for the Juno mission to Jupiter. Dr. Hansen is responsible for the development and operation of JunoCam, an outreach camera that will involve the public in planning images of Jupiter.
Five MILLION Planet Four classifications! We have 4 people on our P4 science team – I cannot even begin to calculate how long it would have taken us to do the work that you, our fabulous volunteers, have done. Because of your contributions we are analyzing all this data, getting results, rather than still doing the measurements on individual HiRISE images.
Just the other day one of my colleagues and I were discussing our early efforts to automate the identification and sizing of fans. We were at the time perplexed by how to train the code to recognize the same fan when the contrast had changed, recognizing that fans could come from the same source yet point in different directions, what to do when a hazy atmosphere lowered the contrast of all the fans in the scene and so on. The human eye-brain connection is so incredibly powerful that we overcome these challenges without even realizing that we have faced a puzzle!
And in the process of helping us I have also realized that you have built a community. We all are now members of the P4 science team. With that in mind I’d like to acknowledge the wonderful contributions of our moderators, and how the interplay between Meg, the moderators, and all of the rest of us has lent a joyful note to the whole undertaking. To the Talk community and all Planet Four volunteers , you might have been alone when we passed the 5 million mark, but all of us are celebrating together around the world!
We started Planet Four: Terrains with the main goal of finding new regions to study during the upcoming seasonal processes HiRISE campaign. The idea was to have people scour low resolution Context Camera (CTX) images for terrains indicative of sculpting during the seasonal processes produced by never-ending cycle of carbon dioxide ice being deposited on the surface in the winter and that ice sublimating in the spring and summer. We would then select a portion of those areas for further study with high-resolution imaging with HIRISE. With the varied textures of the Martian surface it would be difficult for a machine to do this task, but the human brain is well suited to this task.
We launched Planet Four: Terrains at the end of June as part of the launch of the Zooniverse’s new citizen science platform and project builder portal. Planet Four: Terrains had little less than a year to review 90 full frame CTX images divided into 20,122 subimages or subjects as their known on the website. With your help, the project was able to get through all 20,122 subjects in time, and even put in more images. Thanks to your classifications and Talk discussions, the science team was able to come up with a list of images and locations for further study. We aim to have the HiRSE camera point at these locations and snap images. Some of these locations will be monitored throughout the Southern spring and summer. Right now these locations have been entered in the HiRISE target database. This means that Planet Four: Terrains has successfully achieved one of its prime goals!
Now, Candy Hansen, PI of the project and head of the seasonal processes campaign with HiRISE, will prioritize our targets with the rest of the regions that the HiRISE team wants to study. The first of these should with any luck get images in the next few months. We’ll keep you updated here on the blog.The final list of targets from Planet Four: Terrains is a mix of locations found on Talk and through the classification interface. We’ll have more details as we get closer to the start of Southern spring (July 5th), but we wanted to share one of the new locales,spotted thanks to the volunteer contributions on Planet Four: Terrains, that will be imaged by HiRISE. This specific region shown above was highlighted on Talk. It was noticed by the science team, and we agree it is an interesting area to look at how spiders develop. We’re interested to see how the seasonal fans and blotches over the coming Martian Southern spring and summer. We’re currently planning a sequence of images at this location. CTX has a resolution of 6-8 meters per pixel. HiRISE has a resolution of 30 centimeters per pixel, so we’ll get to see a lot more detail particularly in the structure of the spider channels than what’s current visible in the CTX image above.
This isn’t the end of the project, we’re really just getting stared. Because of your classifications, we’ve found spiders in interesting and potentially unexpected regions so we’ve decided to keep the project going with new locations to review. Help today at http://terrains.planetfour.org
I’ve been learning to use JMARS (Java Mission-planning and Analysis for Remote Sensing) to plot the coverage of the CTX images for Planet Four: Terrains. JMARS is a really nice tool for overlaying observation footprints and different maps and datasets on top of each other for Mars and other planets.
I decided to take a look at what the HiRISE Season 2 and Season 3 observations, that the science team is currently working on writing up, look like on a map of the South Pole when you plot their physical coverage on the pole . You can really see the overlap and what a small area that HiRISE covers compared to CTX.
Here’s the footprint HiRISE observations for Seasons 2 and 3 outlined in red on the elevation and topography map of the Martian south pole (latitude and longitude lines are in 10 degree intervals).
Here’s a zoom in on one of our favorite regions, Inca City. You can really see the repeat coverage outlined in white in this case.
Here’s another zoom in of a different area, where you can see multiple seasonal targets outlined in red:
For comparison here’s the footprints of the first set CTX images (latitude and longitude lines are in 10 degree intervals). The colors represent geologic units, but for this comparison we’re focusing on spatial distribution and coverage.
I’ve been looking at the results of my pipeline to combine the many classifications we get for each Planet Four: Terrains subject (CTX subimage) and also the subjects you’ve marked with Talk hashtags in preparation for picking a list of final targets for the HiRISE seasonal campaign. I thought I would share with you some great examples of images with baby spiders that I found. If you’re having a hard time identifying spiders from baby spiders or a channel network, here’s some advice from our site guide:
- Legs longer than the size of the center pit: It’s a spider
- Only a pit or has tiny legs shorter than the size of the center pit: It’s a baby spider
- No discernible pit and no centralized pattern but more grid or network like: It is a channel network
Gallery of Subjects With Baby Spiders – click an image below to get the slide show – Enjoy!
WeMartians is a brand new podcast aimed to engage the public in the exploration of Mars. The latest episode is about citizen science on Mars with Michael talking about Planet Four and Planet Four: Terrains. Listen to Michael (and cameos of other familiar Zooniverse voices) below or on the WeMartians website.
One of the key goals of Planet Four: Terrains is to identify new areas of interest to observe with HiRISE during the seasonal processes campaign so that we better learn about the carbon dioxide geyser process and about how and were spiders and related channels form. You can read more about the particular goals of Planet Four: Terrains here. Over the months we’ve read the discussions and comments on Talk and been making a list of regions to consider from your observations. We’re really intrigued by many of the things you’ve all spotted. Which is fantastic news! Talk has been a huge asset for this work, but we’re also using the classifications from the classification interface as well. I’ve spent the past three weeks putting together a software pipeline to take the multiple classifications per CTX subframe (typically 20 people review each subject image) to identify spiders, baby spiders, channel networks, craters, and the Swiss Cheese Terrain.
Now that the machinery is all together combined with the interesting gems on Talk we’re ready to make our list of proposed new HiRISE monitoring targets. By April 20th I aim t provide the rest of the Planet Four: Terrains science team a compiled list of locations for them to review. Then Anya will input these into the HiRISE planning system where they will be considered with the HiRSE team’s science goals and eventually Candy who wears many hats including Deputy Director of the HiRISE camera and lead of the seasonal processes campaign will prioritize these new areas with the already existing targets in the seasonal processes observing program. We aim to be ready for HiRISE’s first attempt to image the South Pole which is coming up in about 60 days or so.
This is where you come in. We have new images of different areas on the site now. There have already been some interesting images from this set I’ve forwarded to the rest of the team after seeing discussions on Talk. Let’s make a push to classify as much of the new data set as possible before the 18th of April. The more subjects reviewed the greater chance to include those areas at the start of the monitoring campaign. Not to worry though, we’ll also have a few chances to include additional targets later in the Spring Season to the HiRISE monitoring campaign if need be or to the next one.
If you have a free moment, classify an image or two at http://terrains.planetfour.org
Thanks to everyone who voted in our poll to nickname the next target region of Planet Four. After 406 votes cast, you can see the final tallied results for yourself below.
After a tight race with Potsdam, Macclesfield has emerged victorious and will be the chosen informal name that we will use from now on to refer to the HiRISE target located at -85.4 degrees N Latitude and 103.9 degrees East Longitude. Below is a view of the newly nicknamed region. Note that this is an informal name for the area on the Martian South Pole. We’ll use the name internally within Planet Four and to refer to it in publications, but this name has not been adopted as the location’s formal name by the International Astronomy Union. We have updated the text in the current Planet Four paper draft to reflect the new nickname.
The Earthly version of Macclesfield is the home to Jodrell Bank Observatory located on the outskirts of the town. Jodrell Bank is home to the large Lovell Telescope (currently the third largest steerable radio telescope in the world) and BBC Stargazing Live, which is broadcast live yearly from outside of Macclesfield. Planet Four launched on BBC Stargazing Live on January 2013. The name was suggested as an homage to the launch of Planet Four and BBC Stargazing Live.
Season 1 images from the new crowned Martian Macclesfield are live on the original Planet Four right now.Classify fans and blotches in Macclesfield at www.planetfour.org
We’ve been finding interesting regions thanks to your classifications and your Planet Four: Terrains Talk comments. We’ll soon be start preparing for the upcoming HiRISE seasonal monitoring campaign and selecting our final list of new targets for HiRISE. The Sun will be fully above the horizon of the Martian South Pole and conditions will be favorable for imaging sometime around July, so we need to get started very soon. The excellent news is that thanks to your help, we’ve completed the original set of CTX images that we had planned for the project. Here’s where on the coverage of the CTX images that we selected and you’ve been classifying since June.
The even more exciting news is that we’re extending the project and have uploaded a new set of CTX images to the website! Looking at the preliminary analysis of your classifications, we’re seeing interesting patterns in the distributions of spiders, baby spiders, and swiss cheese terrain. We want to investigate this further by covering more of the South Pole that we hadn’t looked at already. These CTX images have never before been looked at by human eyes in such detail before. There are bound to be something interesting, and if so we will still have time to add the region to our HiRISE target list.
Here’s a comparison of the location of the new CTX images in dark blue compared to the our first set of observations on the reviewed on the site in cyan.
Help search the new CTX images or spiders, swiss cheese terrain, and more by classifying an image or two at http://terrains.planetfour.org