Jul 10, 2014 — A team of volunteer space cowboys may have to say goodbye to ISEE-3 and to their dream of reviving for a final mission the creaky, 36-year-old hardware. Failed tests Wednesday suggest a fuel problem.
Jan 20, 2014 — The European comet-chaser has been in hibernation for nearly three years in an effort to conserve power. It is due for an August rendezvous with 67P/Churyumov-Gerasimenko.
Dec 11, 2013 — The European Space Agency's probe has spent the last decade doing flybys of Earth and Mars to match comet 67P/Churyumov-Gerasimenko's speed.
Dec 3, 2013 — Imagine stepping into an elevator and bumping into your greatest hero. What would you say? Commentator Adam Frank had this happen with one of the 20th century's greatest astronomers, a seer of sorts.
Dec 2, 2013 — There were hopes over the weekend that ISON might have survived its close encounter with the sun. But "with more than a little sadness," the space agency says, "we have to declare the comet lost."
Nov 25, 2013 — Once again, there's talk about a possible "comet of the century." Will ISON be a thriller or a dud? It's due to whiz by the sun on Thanksgiving Day. If it holds itself together after that, the comet could put on a stellar show in December.
Aug 22, 2013 — NASA says the small object that was caught on video by a spacecraft called the Solar and Heliospheric Observatory was most likely a member of a sun-grazing group of comets known as the Kreutz family.
Mar 15, 2013 — The comet's now putting on a show in the Northern Hemisphere's night sky. Using its orbiting observatories, NASA captured a stereo view from space that offers a unique perspective.
Feb 19, 2013 — The eye-popping, ear-splitting meteor streaking over Russia last Friday was an invitation to look up more often, to track the shooting stars we might see on any given night. These daily visitors to our planet put cosmic history into context, lighting up a past that is full of debris.
May 16, 2012 — The violent demise of the dinosaurs can teach us a lesson or two about our place in the big scheme of things. Are we the end product of cosmic cataclysms?