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Black holes keep 'burping up' stars they destroyed years...
Years after ripping stars to shreds, 24 black holes suddenly flared up with radio waves in inexplicable 'burping' bouts. Half of all...
Why are animals so colorful?
Neon green, ultraviolet, rainbows — the variety of colors animals can make seem endless. Here's why they make this profusion of color.
What is the most colorful animal on Earth?
Neon green, ultraviolet, rainbows — the variety of colors animals can make seem endless.
Save $100 on the best iPad for students
This fantastic tablet has had its price slashed again.
Hot weather could boost aggression — but only in certain...
Under some circumstances, people may become more aggressive when they're overheated. But other decision-making doesn't seem to be...
15 jaw-dropping spacewalk images
Fearless astronauts push the limits in these epic spacewalk photos.
Unknown ultra-light particles linked to dark matter could...
The use of atomic clocks could help bring cosmology and astrophysics "down to Earth" by allowing scientists to investigate the mysteries...
Could a star ever become a planet?
Most scientists say a star can never become a planet, but the boundaries between these stellar objects can sometimes be murky.