From the BBC: "A Nasa space probe has sent back its first images of Mars within hours of arriving on the planet.
The Spirit rover survived the perilous plunge through the Martian atmosphere after a seven-month voyage from Earth.
The six-wheeled robot will seek signs that Mars was once capable of supporting life.
A second rover, named Opportunity, is expected to land on the other side of the planet at the end of January.
The pictures show the barren, rock-strewn landscape around the rover, including a large, sharp boulder that it narrowly missed hitting.
"The images are outstanding," science manager John Callas said.
"The quality (is) the best that have been taken. This is incredible. This could not be better."