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Rover’s eye view of Mars

WHILE NASA’S MARS EXPLORATION ROVER Opportunity was travelling from Victoria crater to Endeavour crater, between September 2008 and August 2011, the rover team took an end-of-drive image on each Martian day that included a drive.

A new video compiles these 309 images, providing an historic record of the three-year trek that totalled about 21 kilometres across a Martian plain pocked with small craters.

The video shows the rim of Endeavour becoming visible on the horizon partway through the journey and growing larger as Opportunity neared that goal. The drive included detours, as Opportunity went around large expanses of treacherous terrain along the way.

The rover team also produced a sound track for the video, using each drive day’s data from Opportunity’s accelerometers. The low-frequency data has been sped up 1,000 times to yield audible frequencies.

“The sound represents the vibrations of the rover while moving on the surface of Mars,” said Paolo Bellutta, a rover planner at NASA’s Jet Propulsion Laboratory, who has plotted many of Opportunity’s drives and coordinated production of the video.

“When the sound is louder, the rover was moving on bedrock. When the sound is softer, the rover was moving on sand.”

Opportunity and its rover twin, Spirit, completed their three-month prime missions on Mars in April 2004. Both rovers continued for years of bonus, extended missions. Both have made important discoveries about wet environments on ancient Mars that may have been favourable for supporting microbial life.

Spirit stopped communicating in 2010. Opportunity continues its work at Endeavour. NASA will launch the next-generation Mars rover, car-size Curiosity, next month for arrival at Mars’ Gale crater in August 2012.

Here’s a video that explains the huge trek Opportunity made to reach Endeavour crater.

Adapted from information issued by NASA / JPL / Caltech.

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A rovin’ on Mars

WHEN NASA’S MARS ROVER Opportunity touched down on the Red Planet on January 25, 2004—three weeks after its twin, Spirit, landed—the official requirement was that it would need to last 90 days to give scientists enough time to do their most important investigations.

Well, it’s now more than seven years later and the plucky rover shows no signs of giving up.

Having travelled more than 27 kilometres at an average speed of around 36 metres per hour, Opportunity has explored many and varied places near its landing site on Meridiani Planum.

For the past couple of years, it has been slowly making its way toward its new destination, Endeavour Crater—a 22-kilometre-wide impact crater that scientists want to investigate. Most recently, Opportunity has been near Santa Maria crater—see our earlier story—and has another six kilometres to go before it reaches Endeavour.

The video above (which doesn’t have any audio) is courtesy of NASA, and shows just how far the intrepid little rover travelled between January 2004 and January 2011.

Adapted from information issued by NASA / JPL.

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