European Space Agency

French astronaut Thomas Pesquet on his first spacewalk on Jan. 13.

French and US astronauts spacewalk for space station repairs

Science

French astronaut Thomas Pesquet and US astronaut Shane Kimbrough switched on their spacesuits' internal battery power, and walked into space to help install three new, refrigerator-sized lithium-ion batteries to upgrade the power system at the International Space Station.

French and US astronauts spacewalk for space station repairs
Gaia - Milky Way

Mapping the Milky Way as never before

Science
Mapping the Milky Way as never before
An artist's impression of ESA's Rosetta approaching comet 67P/Churyumov-Gerasimenko. The comet image was taken on August 2, 2014, by the spacecraft's navigation camera at a distance of about 500 km. The spacecraft and comet are not to scale.

Scientists prepare for a historic landing on a 'seething and sputtering and spitting' comet

Science
Scientists prepare for a historic landing on a 'seething and sputtering and spitting' comet