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Curiosity Mars rover phones home to say it's doing well, is beginning surface mission

Signals sent to Earth from NASA's Curiosity Mars rover indicate that the robot is functioning normally as it begins investigating the surface of the Red Planet.

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NASA/JPL-Caltech
This is one of the first images taken by NASA's Curiosity rover, which landed on Mars the evening of Aug. 5 PDT (morning of Aug. 6 EDT). It was taken through a "fisheye" wide-angle lens on the left Hazard-Avoidance camera on the left-rear side on the rover at one-half of full resolution.

| Pasadena, Calif.

NASA's huge Curiosity rover appears to have survived its harrowing Mars landing Sunday night (Aug. 5) in fine form, and it's now gearing up for its two-year mission on the Red Planet's surface.

News that the 1-ton Curiosity rover touched down safely inside Mars' Gale Crater came in at 10:32 p.m. PDT Sunday (1:32 a.m. EDT and 0532 Monday), though the six-wheeled robot actually landed about 14 minutes earlier. (That's how long it takes signals to travel from the Red Planet to Earth.)

The rover seems to be in good health after being lowered to the red dirt by a rocket-powered sky crane — a maneuver that had never been attempted before on another planet. And Curiosity has made the mental switch from entry, descent and landing mode to surface mode seamlessly, team members announced today (Aug. 6).

"She is in surface nominal mode," Curiosity mission manager Mike Watkins, of NASA's Jet Propulsion Laboratory, told reporters here at JPL today. "The surface mission of Curiosity has now begun." [1st Photos of Mars by Curiosity Rover (Gallery)]

The rover is reporting no serious anomalies or glitches, Watkins added. Initial checks of the car-size vehicle's 10 science instruments look good, though fully vetting their condition will take weeks or months.

Like Curiosity itself, the rover's handlers are now transitioning to surface mode. The biggest activity on the docket for today — its first Martian day, or Sol 1 — is deploying Curiosity's high-gain antenna. This operation should begin at around 6 p.m. PDT (9:00 p.m. EDT; 0100 GMT Tuesday), officials said.

"This allows us to talk directly to the Earth with enough gain that it can actually send data to us, and be more easily talked to by us," Watkins said.

The antenna will take some of the communications pressure off NASA's Mars Odyssey and Mars Reconnaissance Orbiter (MRO) spacecraft, which have been relaying word from the rover back to Earth. Confirmation of last night's successful touchdown, in fact, came via the venerable Odyssey, which has been orbiting Mars since 2001.

Curiosity will also take a five-hour reading today with its Radiation Assessment Detector instrument, or RAD, which gathered data for much of the rover's eight-month space cruise.

"That's not a checkout; that's 100 percent data collection," said Curiosity chief scientist John Grotzinger, a professor at Caltech in Pasadena.

On Sol 2, Curiosity will deploy its head-like mast and take some panoramic photos of its surroundings with its navigation cameras, Watkins said. The rover has already sent home a handful of pictures snapped by its hazard-avoidance cameras.

All of these activities are geared toward making sure Curiosity is fully functional and ready to rove. The robot's main mission is to determine if the Gale area is, or ever was, capable of supporting microbial life. It will study the rocks and soil of Gale and Mount Sharp — the mysterious 3-mile-high (5 kilometer) mountain rising from the crater's center — for at least the next two Earth years.

So while landing was a huge moment and a major accomplishment, Curiosity's quest has only just begun.

"We haven't even scratched the surface," Grotzinger said.

Visit SPACE.com for complete coverage of NASA's Mars rover landing Sunday. Follow senior writer Mike Wall on Twitter@michaeldwall or SPACE.com @Spacedotcom. We're also on Facebook and Google+. 

Copyright 2012 SPACE.com, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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