A veteran NASA comet-chasing probe has stopped communicating with mission managers and is apparently spinning out of control. Continue reading →
A veteran NASA comet probe turned its sights on a new target, Comet ISON, which is barreling toward a close encounter with the sun this fall. ->
A recycled comet probe that flew NASA's Deep Impact mission has sent back its first picture of its next target, the comet 103P/Hartley, also known as Hartley 2.