Phoenix Has Landed! May 25, 2008 Pasadena -- A NASA spacecraft landed in the Martian arctic today to begin three months of examining a site chosen for the likelihood of having frozen water within reach of the lander's robotic arm. Radio signals received at 4:53 p.m. Pacific Time confirmed that the Phoenix Mars Lander had survived its difficult final descent and touchdown 15 minutes earlier. In the intervening time, those signals crossed the distance from Mars to Earth at the speed of… (phoenix.lpl.arizona.edu) 更多...
