Mars crater looks 'Earth-like'

9 Aug 2012, 12:13 pm   -   Source: AAP
Overnight, the car-size rover poked its head out for the first time since settling in Gale Crater, peered around and returned a flood of black-and-white pictures that will be stitched into a panorama. (AAP)

Overnight, the car-size rover poked its head out for the first time since settling in Gale Crater, peered around and returned a flood of black-and-white pictures that will be stitched into a panorama. (AAP)

Scientists say the Mars crater where the Curiosity rover landed looks strikingly similar to California's Mojave Desert.

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The ancient Martian crater where the Curiosity rover landed looks strikingly similar to California's Mojave Desert with its looming mountains and hanging haze, scientists say.

"The first impression that you get is how Earth-like this seems looking at that landscape," said chief scientist John Grotzinger of the California Institute of Technology.

Overnight, the car-size rover poked its head out for the first time since settling in Gale Crater, peered around and returned a flood of black-and-white pictures that will be stitched into a panorama.

It provided the best view so far of its destination since touching down after nailing an intricate choreography. During the last few seconds, a rocket-powered spacecraft hovered as cables lowered Curiosity to the ground.

In the latest photos, Curiosity looked out toward the northern horizon. Nearby were scour marks in the surface blasted by thrusters, which kicked up a swirl of dust. There were concerns that Curiosity got dusty, but scientists said that was not the case.

"We do see a thin coating of dust, but nothing too bad," said Justin Maki, imaging scientist at NASA's Jet Propulsion Laboratory, which manages the mission.

Scientists were giddy about the trenches because it meant Curiosity could drive up to them and start collecting samples once the science phase of the mission gets under way.

Since landing, Curiosity has zipped home a stream of low-resolution pictures taken by tiny cameras under the chassis and a camera at the end of its robotic arm, which remained stowed. It also sent back a low-quality video glimpsing the last two-and-a-half minutes of its descent.

The rover successfully raised its mast packed with high-resolution and navigation cameras. With the mast up, it can begin its shutterbug days in force including taking a 360-degree colour view of its surroundings as early as Thursday.

Grotzinger said he was struck by the Martian landscape, which appeared diverse. There seemed to be harder bedrock underneath the gravelly surface, he said.

"It kind of makes you feel at home," he said. "We're looking at a place that feels really comfortable."

Mars, of course, is very different from Earth. It's a frigid desert constantly bombarded by radiation. There are geological signs that it was a warmer and wetter place once upon a time. One of the mission's goals is to figure out how Mars transformed.

After sailing eight months and 566 million kilometres, Curiosity parked its six wheels near the Martian equator where it will spend the next two years poking into rocks and soil in search of the chemical ingredients of life.

Its ultimate destination is a mountain towering from the centre of the crater floor.

Preliminary estimates indicate Curiosity landed 6.5 million kilometres away from the base of Mount Sharp, thought to contain intriguing signs of past water - a starting point to learning whether microbial life could exist.

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