It turns out that Rosetta's comet may not have always been just one object. Researchers have found that two comets collided at low speed in the early solar system to create the strangely-shaped Comet 67P/Churyumov-Gerasimenko.
ESA's Rosetta spacecraft has detected argon on the comet 67P/Churyumov-Gerasimenko for the first time.
ESA's Rosetta spacecraft may reveal a bit more about how comets "stay alive" with their daily water-ice cycle. By learning a bit more about this cycle, researchers are learning a bit more about comets in general.
NASA's Hubble Space Telescope has captured a spectacular new image of the galaxy Messier 63, a cosmic sunflower swirling in the middle of space. Nicknamed the "Sunflower Galaxy," this object has spiral arms and millions of stars.
This image may look like something Van Gogh painted, but that's far from the truth. Taken by ESA's Planck satellite, this picture actually shows two Magellanic Clouds, among the nearest companions of our Milky Way galaxy.
The Rosetta spacecraft is making its closest approach yet to the sun, riding along on the comet 67P/Churyumov-Gerasimenko.
A comet is making quite the show before reaching its closest point to the sun. The Comet 67P/Churyumov-Gerasimenko has blasted out a spectacular jet, which has been captured by the Rosetta spacecraft.
Scientists may have discovered lava flows on the surface of Venus. ESA's Venus Express has revealed the best evidence yet for active volcanism on the planet.
A close-up of Comet 67P/Churyumov-Gerasimenko revealed that electrons close to the comet's surface-not photons from the sun-caused the rapid breakup of water and carbon dioxide molecules spewing from the surface.
They may look like cool, clear pools of water on Mars, but they're not. Mars Express has taken new images that reveal blue "pools" on the Red Planet that are actually something else entirely.
ESA's Venus Express has officially ended its eight-year mission after far exceeding its planned life.
Astronomers are officially preparing for the first-ever landing by a spacecraft on a comet. At 8:35 a.m. GMT today, a robotic lander called Philae will be released from the European Space Agency Rosetta spacecraft.