Comet

Discovery of oxygen on comet 'big surprise'

Stunned scientists announce the unexpected discovery of large quantities of oxygen on a comet which streaked past the Sun in August with a European spacecraft in tow.

January 10, 2016
January 10, 2016

Comet dust 'ballistics' probed in 3D

Scientists in the US make detailed 3D maps of the cavities carved by comet dust in blocks of foam carried by Nasa's Stardust spacecraft.

October 29, 2015
October 29, 2015

Discovery of oxygen on comet 'big surprise'

Stunned scientists announce the unexpected discovery of large quantities of oxygen on a comet which streaked past the Sun in August with a European spacecraft in tow.

October 25, 2015
October 25, 2015

In unexpected discovery, comet contains alcohol, sugar

Scientists identify two complex organic molecules, or building blocks of life, on a comet for the first time, shedding new light on the cosmic origins of planets like Earth.

June 14, 2015
June 14, 2015

Philae comet lander wakes up

The European Space Agency (Esa) says its comet lander, Philae, has woken up and contacted Earth.