• Comet 67P too hot to be covered in ice

    ESA’s comet chaser Rosetta has made its first temperature measurements of its target comet, 67P/Churyumov–Gerasimenko, and found that it is too hot to be covered in ice and must instead have a dark, dusty crust.The observations of the comet we

  • Comet 67P/Churyumov–Gerasimenko develops coma

    As comet-chaser Rosetta approached its target to roughly 2 million km in early May, images captured by OSIRIS clearly showed that the comet has already developed 1 300 km long coma. This onset of activity offers scientists the opportun

  • Rosetta wakes up from deep space hibernation

    After 31 months of deep space hibernation ESA's comet chaser "Rosetta" has woken up and contacted mission control today. The signal was received by NASA’s Goldstone ground station in California at 18:18 UTC, during the first window of oppor