But in that small space is enough mass to equal 11 ... More from Science Narrator: The cosmos can be a dangerous place. Take black holes, for example. They're some of the most violent objects ...

Brian Greene (Cosmic String Theory) and Astrophysicist Ethan Siegel have collaborated on a National Geographic coffee-table ...

The latest congressional UFO hearing featured testimony from former military personnel who said that government secrecy hides ...

The PRIMA space telescope would observe the cosmos in far-infrared light, while AXIS would be an orbiting X-ray detector.

For decades, astronomers have puzzled over how the supermassive black holes residing in the center of galaxies form. Now, ...

A radical hypothesis suggesting black holes could be behind the accelerating expansion of our universe has been stirring up controversy among astronomers. A new study may contain the first tantalizing ...

Black hole—A region in space where gravity is so strong that ... in the fabric of space produced by violent events in the cosmos. Kuiper Belt—A donut-shaped region of comets in orbit beyond ...

"We think that a gas cloud engulfed the black ... NASA's Goddard Space Flight Center in Greenbelt, Maryland. "There's still so much it has left to teach us about our ever-changing cosmos." ...