Five potential sites have been selected for what will be one of humanity's most audacious undertakings - landing a spacecraft on a comet. Scientists will command the Rosetta spacecraft to 'drop' the ...

The Rosetta–Philae mission made history by sending a lander to a comet for the first time, but the touchdown didn’t unfold as planned. Philae’s anchoring systems misfired, sending the lander bouncing ...