Category Archives: Mars Reconnaissance Orbiter

HiRise, Mars, Mars Reconnaissance Orbiter

What’s Your Pixel Pleasure at Mars?

Leave a comment

Picture Suggestions Welcome

Symmetry in dune formations on Mars. From the Mars Reconnaissance Orbiter HiRISE camera.

Do you have a place you’d like to see “up close and personal” on Mars? If so, the folks running the HiRISE camera on the Mars Reconnaissance Orbiter want to hear from you. This is a very cool project for what has often been called the “people’s camera” on the long-running Mars mission. The idea is to engage people more closely with Mars exploration — and what better way than to challenge the public come up with ideas for places to explore with this wonderful camera?

The HiRISE team created an online tool called HiWISH that lets you examine Mars maps to see where images have been taken, where imaging will take place in the future. You use that to find areas where you want to explore that haven’t been covered — then you write up image suggestion.  You will be asked to give the observation a title, put it into a science theme like volcanism, seasonal change, or impacts, and explain why it’s important scientifically to observe the region of interest.

I’m sure that the team will get many thousands of suggestions for images of specific Mars sites. Their job will be to prioritize the images and evaluate them for good science.  The more scientifically relevant your suggestion is, the better chance your “imaging program” will get sent to the spacecraft.  Eventually, thousands of targets from scientists and the public will be imaged when the orbital track and other conditions are right.

If you want to explore Mars via image suggestions in this very cool program, head on over to the mission suggestion page.

Let’s get out there and do some good Mars science, everybody!

HiRise, Mars, mars climate, Mars Phoenix Lander, Mars Reconnaissance Orbiter

“I Can See the Lander from Here…”

Leave a comment

Spotting Evidence of Human Exploration of Mars

As the Mars Phoenix lander started to get a glimpse of the Sun towards the end of the northern hemisphere winter, the Mars Reconnaissance Orbiters HiRISE camera was used to imaging the Phoenix landing site despite the low light levels.
As the Mars Phoenix lander started to get a glimpse of the Sun towards the end of the northern hemisphere winter, the Mars Reconnaissance Orbiter's HiRISE camera was used to image the Phoenix landing site despite the low light levels. (Courtesy NASA/JPL/University of Arizona)

Back in late (Earth) summer, the Mars Reconnaissance Orbiter HIRISE Camera  (MOR-HIRISE) took an image of an area near the north pole of Mars.  It shows that the region looks like a frigid wasteland — which it is during Mars winter.  But, smack in the middle of the image is something kinda neat — the Mars Phoenix Lander — standing out against the background terrain.

Phoenix was sent to measure conditions for a short time near the pole. It performed quite well before going to sleep during the onset of northern hemisphere winter. For now it is dormant and quite possibly dead.  Scientists are going to try and communicate with it as spring approaches. In the meantime, though, the MRO continues to study the surface in the polar regions to help us understand what sorts of changes it goes through during the yearly freeze and thaw cycle.

In this portion of the larger image returned by the HIRISE camera, the large expanse of white area doesn’t actually doesn’t indicate the amount of frost surrounding the lander.  Since this image was taken in a low-light situation, its bright and dark values have been stretched to bring out the contrast and allows us to see details in the surface near the lander. Many factors affect how the surface looks in an image. Scientists need to take into account the size of carbon dioxide ice grains mixed in with the surface soil, the amount of dust mixed in with the ice, the amount of sunlight hitting the surface, and different lighting angles and slopes. In addition, the winds blow here constantly, and their directions change all the time.  Depending on how strong the winds are,they can move loose frost and dust around, changing the way the surface looks. Studying these changes will help planetary scientists understand the nature of the seasonal frost and winter weather patterns in this area of Mars.

I think it’s pretty amazing we can spot evidence of our robotic exploration on Mars. So far as the evidence from the various mappers and orbiters have shown us, humans are the ONLY ones to have explored Mars in its history — and that makes this pretty darned unique!