Last week, the Rosetta spacecraft crashed into comet 67P/Churyumov-Gerasimenko after orbiting it since 2014. It was supposed to do that: the mission was at an end, and the mission designers wanted ...

Europe's Rosetta mission officially ended Friday when the spacecraft purposefully crashed into its comet after spending two year orbiting the icy object in deep space. As the mission came to its ...

The Rosetta spacecraft, launched in 2004 and arriving at its target in 2014, changed space science forever. Its discoveries challenged the theory that comets are frozen leftovers.