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?