A robotic explorer beamed stunning images of the bleak Martian surface back to Earth, showing today it had made a safe landing in what NASA scientists said could be a dry lake bed ideal for finding signs of life on the red planet.
The black-and-white pictures showed a panoramic view of the barren, rock-strewn Martian landscape surrounding the Spirit lander, which touched down at the wind-swept center of the Gusev crater - exactly where project managers had hoped.
"It's a place almost ... tailor-made for our vehicle," Mars Exploration Rover chief mission investigator Mr Steve Squyres said. "It's a glorious crater. We have hit what the science team believes is the scientific sweet spot."
The pictures, taken at mid-afternoon Mars time, show a vast expanse of what appears to be desert extending to the horizon in every direction. The scientists were intrigued by dust-filled hollows they said may be one of the rover's first stops. They also were trying to gauge the distance to a series of ridges.
"The images are outstanding," Mars Exploration Rover science manager Mr John Callas said as the pictures from Spirit began to appear on a giant screen at NASA's Jet Propulsion Laboratory in Pasadena, California.
"The quality (is) the best that have been taken. This is incredible." The pictures captured Mars for the first time in stereoscope - offering unprecedented depth of field that will allow NASA to more accurately pinpoint areas of exploration.
Mr Squyres said if the landing site inside the crater was in fact a dry lake bed, its sedimentary rock could have preserved clues about the planet's ancient past.
The spacecraft sent between 60 and 80 pictures - an unexpected bounty for the Spirit team - to the passing Odyssey orbiter during a 12-minute communications window and gave NASA scientists a glimpse of the lander itself, which had traveled seven months through space to search for life on Mars.
Data collected from the lander also showed it survived its long journey and risky plunge to the Martian surface in good shape and apparently ready to begin its primary geologic mission.