Space

Distant planets show Earth's fiery future

Comet Lovejoy survives close encounter with the sun

NASA detects "heartbeat" of smallest black hole

Gas cloud spirals into Milky Way black hole

NASA plans to harpoon comet

Paul Allen to build private shuttle replacement

NASA gets up close and personal with Vesta asteroid

Mars could harbor life – but Curiosity's unlikely to find it

NASA loses hundreds of moon rocks