Kelly Beatty

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

If you think parallel parking is hard, then consider the European Space Agency's latest mission. ESA's Rosetta mission will attempt to land a small robot on a rocky comet barreling through space at more than 34,000 miles an hour.

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

NASA's Voyager Now First Human-Made Object to Leave the Solar System

NASA's Voyager Now First Human-Made Object to Leave the Solar System
The World

Observing the Transit of Venus: Past and Present

Arts, Culture & Media
Observing the Transit of Venus: Past and Present