There's a strange sphere of mass at the outer reaches of solar space.
The galaxy is a big place, after all.
A new study suggests hibernation is an ancient adaptation to harsh winters.
Hair may record the information swallowed by the gravitational monsters.
Some people with HIV have a seemingly miraculous ability to control the disease without life-long antiviral medications or risky bone marrow transplants, and now, a new...
"There is no chance" the sloth survived.
Cells intuitively avoided dead-ends when released into microscopic mazes. Here's how.
The solidification of the inner core may have strengthened Earth's magnetic field.
A spectacular fireworks show will light up an otherwise pitch black universe.
The mummy had an undigested piece of woolly rhino in its stomach.