Each year, Science chooses a singular scientific development as Breakthrough of the Year. This year, the Rosetta mission took the crown! What makes the rendezvous of the Rosetta spacecraft with comet 67P/Churyumov–Gerasimenko a 2014 Science Breakthrough of the Year? This breakthrough captured people's imaginations with a series of photographs and a nail-biting descent of the Philae lander to the surface of the comet. On top of the public interest and, more important, is the data about the comet being gathered from the Rosetta spacecraft.
Meet this year’s Breakthrough and check out the nine amazing runners-up in this video!