Debris from the broken-apart Intelsat 33e telecom satellite is spreading across geosynchronous orbit, threatening spacecraft ...
A new animated map sheds light on the superhot "zombie star" at the heart of a nebula leftover from a distant supernova witnessed by astronomers in 1181. The remains of the stellar explosion are ...
and the galaxy hurtling through space. The dots moving across the right side of the animation show how quickly each object travels 150 kilometers. As you can see, Earth's rotation is relatively ...
The Earth is really, really old. Over 4 1/2 billion years old, in fact. How do we begin to comprehend a number that large? It helps to put it on a more fathomable scale. Watch to see where Earth's ...
A new video shows how Earth's magnetic field weakened and warped before temporarily flipping during a recent "polar reversal event." ...