Sky No Longer The Limit: First Probe Ever Lands On CometMaking history. European scientists land a spacecraft on a moving comet.
Md.-Made Instruments Help NASA Collect Debris From CometThere's nothing like being at the right place at the right time. That includes the planet Mars.
Comet On Near-Collision Course With The Red PlanetMars is facing a close call this weekend. A rare comet will pass by the planet at an extremely close distance.
Thanksgiving Day Show In The Sky! Comet Ison Makes Close Encounter With The SunClose encounter! All eyes were on outer space as a comet barreled toward the sun. Would it survive this dangerous journey?
NASA Declares End To 'Deep Impact' Comet MissionA spacecraft that gave scientists their first peek into a comet's icy interior will explore no more, NASA said Friday.
Look To The Skies! One Of The Year's Best Meteor Showers Is PeakingOne of the year's best meteor showers is peaking!
Hubble Telescope Helps Astronomers Observe 'Comet Of The Century'It's being billed as the "comet of the century." This fall, a spectacular comet will be passing so close to the earth that it could shine brighter than the moon.
Look To The Sky: Comet Visible To MarylandersA comet that's been putting on a show south of the equator is now visible where we are---but it's not easy to see.
Hyperactive Comet Photographed By NASAScientists now have close-up pictures of a hyperactive comet that seems to be spewing water.
Maryland Scientists Get Second Look At CometWhen a team headed by a University of Maryland scientist punched a hole in a comet, they had everything but a clear view. Five years later, that may be about to change.