Could parallel universes exist? If so, what would they look like and how would they form?
Comets carrying chemicals necessary for life may have come to Earth billions of years ago.
NASA’s Kepler mission lets us search for planets orbiting stars outside our solar system.
Scientists discover evidence for the key ingredients for life on Saturn’s moon Enceladus.
What would life on a red dwarf planet look like?
The answer to how you would die in a black hole could revolutionize the laws of nature.
Are we alone–and if not, what might the inhabitants of far-flung worlds look like?
An ancient Greek computer could predict eclipses with impressive accuracy.
Detailed satellite images reveal the web of connections that sustain life on Earth.
NASA untangles why a parachute failed during tests prior to the Curiosity landing.