Leslie Mullen In Hunt for Alien Planets, Frustration Lingers Over Canceled Missions Planet-hunting astronomer Geoff Marcy is angry about exoplanet missions that were canceled or abandoned. extraterrestrial-life Ancient Meteorite Impact Shattered Santa Fe In the mountains of New Mexico, scientists have found evidence for an ancient meteorite strike — even though the impact crater is long gone. By Leslie Mullen Published 9 August 10 meteoroids
