The HiRISE team met up this summer in Whitefish, Montana. In between meetings, we were also able to take several geologic field trips and hikes. Glacier National Park has many cool (haha) glacial features, of course, and we also learned about some interesting sedimentology that occurred in the ancient geologic past. The patterns we saw in the sedimentary rocks are similar to those discovered by the Mars Opportunity Rover – cross-bedding and festooned ripples that form when sand is laid down under a body of water. The shape and direction of the ripples can tell you how much water was present, how fast it was flowing, and whether it was a river, a lake, or an ocean. These are important questions we’d like to answer about the history of water on Mars.

The park also has wonderful examples of glacial geology. HiRISE has taken images of many features thought to be related to glaciers, so it’s important to understand the terrestrial analogs that lead scientists to think these are evidence of flowing ice on Mars. For example, we hiked along a moraine composed of jumbled rocks the Grinnell Glacier left behind as it flowed downhill. In addition to the remains of the (rapidly disappearing) glacier itself, we also saw typical glacial erosional structures such as U-shaped valleys, hanging valleys, and cirques. For a HiRISE image of cirque-like features, see PSP_005730_1405.

On one of our field trips, we were accompanied by reporter Michael Jamison of The Missoulian. This story was on the front page of the paper the following day:

I thought the story was really good – a quirky (but so are we!) description of why we would want to stare at the rocks in such a magnificent setting, and their relevance to our mission to Mars. We all thought it was funny when he called Alfred McEwen, our Principle Investigator, a “Marsman”!

HiRISE Team in Glacier National Park, in front of a classic U-shaped valley carved by glacial erosion.

We’re in the midst of another HiRISE team meeting here in Tucson. I can’t believe it’s been almost two years since the team meeting I blogged about here. There are a few new faces, but mostly familiar friends that we’ve worked with for years by now. Our two newest Targeting Specialists are meeting the science team for the first time. (They’re actually not that “new” any more – they started last June, but this is their first team meeting.) Some of the other new folks are students and post-docs who are working on interesting research projects using HiRISE data. There are also a few people from JPL here at the meeting, who we talk to on the phone and email often, but we’ve never actually met face-to-face before.

Today during the meeting we are getting updates on all the Science Themes. Our images are divided into groups according to the geologic process that we hypothesize occurred. For each of these themes, a Science Theme Lead is assigned. These “STLs” are Co-Investigators or postdocs who are experts in that area. For example, the Volcanic Processes theme contains images intended to explore phenomena related to volcanism, such as inflated lavas, water-lava interactions, volcanic pits and cones, and mysterious types of collapse features such as the one shown in the anaglyph to the left. As you can read in the caption for that image, we’re still not sure how this feature formed. There are several different possibilities. The image was originally placed in the Impact Processes theme because that was one hypothesis. However, after seeing the high resolution image and stereo data from HiRISE, formation by a meteor impact doesn’t seem as plausible. Collapse after loss of material beneath the surface, such as magma or water, is a better fit to our observations.

I had the opportunity to attend the 40th annual meeting of the Division for Planetary Sciences of the American Astronomical Society. It’s being held here in Ithaca, NY at Cornell University. Along with some beautiful fall weather, I’ve also enjoyed some fantastic science. The meeting started with the Mars sessions on the first day. I think every single talk about the planet’s surface used HiRISE data! An entire session was devoted to the Martian atmosphere, which was interesting because I’m not as familiar with that. It’s also been great to see what’s going on in the rest of the solar system – I’ve been pretty Mars-oriented since starting with HiRISE, so I’ve loved hearing about things like the lakes on Titan, progress in exoplanet studies, and changes in Jupiter’s Great Red Spot.

As usual, other blogs are covering the meeting well (Planetary Society and the Martian Chronicles, for example). In addition, the sessions are all being web-streamed live (links to streaming video here; full program here). I think this afternoon’s special sessions are going to be really interesting, so I recommend watching them. I’m especially interested in the mission highlights from the rovers, Phoenix, MESSENGER, Cassini, and Kaguya. We’ve already seen some results from Kaguya and MESSENGER in the individual sessions – exciting stuff!

A number of our science team members are at LPSC, the annual Lunar and Planetary Science Conference, this week. This is a big gathering in Houston, Texas, where members of the planetary science community share their work from over the last year. Unfortunately, we don’t have an active blogger there, but I wanted to point out some other people sending out excellent reports about HiRISE science.

The Martian Chronicles has two great articles about presentations given by HiRISE Team Members: Spiders on Mars, from our Deputy PI Candice Hansen (more about this topic here, under “Spring at the South Pole of Mars”); and Layers and Swiss Cheese, which mentions two HiRISE people, Kathryn Fishbaugh and Shane Byrne. The polar group has been very active in helping to plan and target images, and their results are really cool (ha, ha!).

Star Stryder has also been at LPSC, with lots of stories through the week. The post Pingos, Polygons and other Puzzles mentions two types of Martian landforms I know members of our team are studying in HiRISE images, although there aren’t many specifics about their LPSC presentations. For some visuals to go along with the story, here are some HiRISE images of possible pingos and plentiful polygons.

I also thought their reports on speeches by the NASA bigwigs were very interesting: NASA Administrator Mike Griffin telling young scientists not to specialize in the face of changing funding priorities, and Alan Stern discussing possible MSL delays.

So, check out these reports, and if you see any other good ones, add a link below in the comments! Hopefully we’ll get more as the week progresses.

This past summer the IAU met in Prague to decide the fate of Pluto, and also to give names to several craters on Mars. After more than two years after I submitted the request, a fresh and rayed Martian crater now officially bears the name Gratteri. Gratteri is the birthplace of my Father, my Grandfather and their forefathers going back as far as back as any Tornabene can remember. Gratteri is a small medieval town of only 1100 people, but once was a more heavily populated duchy that ruled the Madonie region from the coast to the mountain tops. Unbenownst to me at the time I submitted my suggestion to the IAU, was the etymology of the name. By a staggering coincidence, the name Gratteri is derived from the Greek word ‘krater‘ meaning a basin or bowl to mix wine and water (see http://en.wikipedia.org/wiki/Krater), which in the English language has come to signify a quasi-circular pit formed by an explosion (volcanic or hypervelocity impact). I was floored to say the least! Not only did I come to study these features on Earth, Mars and other bodies as my lifelong passion, but it was also the name of the town of my ancestral origins!

Well, soon I will be in Italy for the MRO PSG in Rome and then for the Terrestrial Analogues meeting in Trento. After these two meetings, I will be taking three days off to go down to Sicily for a long overdue break. My parents await me in Gratteri, and it will be so nice to meet them there for my second visit. I am particularly excited as I will be bringing a HiRISE image of the Martian Gratteri crater to present to the Mayor and townsfolk. In addition to a poster print out of the HiRISE image taken during our first cycle, I will be bringing an annotated version that I made and would like to share with you here. I used Google Earth to find Gratteri and acquired the satellite image along with the proper scale so that I could superimpose it on the HiRISE image. Gratteri is the cluster of buildings on the right with the cutout being approximately 2.5 km in width. The Martian crater Gratteri is almost 7 km in diameter. I was once again reminded, and immediately humbled, by the shear scale of this crater that I claim to know so much about! I’m amazed how big this rather small Martian crater is in relation to our terrestrial stomping grounds.

Well, I best be off. I still have so much packing to do! Not to mention, I haven’t even finished my talk yet…

Ciao miei Amici! Ci vediamo dopo!

We’re just finishing up four days of having the whole HiRISE team visiting us here in Tucson. It’s been a great team meeting! We had updates on operations, and heard a lot about science results from HiRISE images. Some CRISM and THEMIS team members participated, too, so we got to see what other teams are doing and talk about collaborating and using multiple data sets. People are doing really exciting things with HiRISE data!

Also, our team is really growing!

You’ll notice a lot of new faces compared to a few years ago!

(more…)

Well, the transition imaging phase is now over, and us folks at HiROC are reflecting on lessons learned. We’re coming to realize that our joy of getting images for this one week will occur constantly for our two year primary science phase, and perhaps even much longer than that. Wow! It’s almost difficult to comprehend!

(more…)

During the Transition Phase, we’ve been having daily “tag-up” telecons at 7:30 AM. (A telecon is a meeting held over the telephone.) It’s a chance for everyone to get on the same page, because it’s been an incredibly complicated and hectic time. We hear about any issues on the spacecraft and review past and upcoming activities. All the different teams give quick updates on their status (Navigation, Flight Engineering Team, all the instrument SOTs — Science Operations Teams — that’s us!). The telecons are usually very short and business-like, because everyone’s been so busy.

This morning, however, we got a break and didn’t have to call in until 9 AM (finally, I got to sleep in! ). When I dialed in, I thought I had called the wrong number! Everyone on the phone was laughing and joking around — very unlike any other tagup meeting I’ve attended. People were very happy and excited to finally see the data from all the instruments. Everyone has been working so hard, and this is the ultimate reward.

The teams all agreed that everything is going well. Congratulations were shared all around!

All of us at HiRISE are grateful for all the hard work the spacecraft teams have done to get us to Mars. We couldn’t do it without them!