Mars rovers find new evidence of 'habitable niche'

Inch by power-conserving inch, drivers on Earth have moved the Mars rover Spirit to a spot where it has its best chance at surviving a third Martian winter -- and where it will celebrate its fourth anniversary (in Earth years) since bouncing down on Mars for a projected 90-day mission in January 2004.

Meanwhile,

Mars rovers find new evidence of 'habitable niche'; perilous third winter approaches | Science Blog