Its pictures like these that put the Mars Program into perspective for me. We have two operational rovers that have rolled across the Martian landscape for five years (when they were designed to last only three months), and we have three satellites orbiting Mars carrying out a variety of key scientific studies. For one of the instruments orbiting over 250 km (155 miles) above the Red Planet on board the Mars Reconnaissance Orbiter (MRO), it is fulfilling the “reconnaissance” duties of the MRO rather nicely. The High Resolution Imaging Science Experiment (HiRISE) is helping out its roving buddy, Opportunity, to plot the best route through the undulating sandy dunes of Meridiani Planum. Robots helping other robots on Mars…
We’ve seen shots like this before taken by the high resolution camera used by HiRISE. From spotting the Phoenix Mars Lander repeatedly throughout 2008 to keeping a watchful eye on the progress of both rovers, the instrument has been an invaluable tool for NASA scientists to see what the landscape is like around the tough wheeled robots.
As another sol rolls on, MER Opportunity clocks up some more distance on its epic two year journey toward Endeavour, a crater 20 times larger than Opportunity’s previous crater subject, Victoria (now a feature shrinking in the rover’s rear view mirror). The rover has a long way to go, but should Opportunity survive the trip, it will be a momentous achievement. After all, the rover will be seven years old at that point.
For now, HiRISE is aiding the planning of Opportunity’s drive through the open Mars desert. As can be seen in the HiRISE image to the left (detail from the main image, top), 1783 sols into its mission, the rover is still going strong. The day before this image, Opportunity had driven 130 metres over the sand dunes. Generally, these dunes are mere ripples in the regolith, but some can be too big for Opportunity to traverse. However, HiRISE will spot any hazard well in advance, and NASA can plan Opportunity’s route accordingly.
So Opportunity roves on toward the southeast target of the Endeavour crater, about 17 km away. But HiRISE will be watching…