In a new book, NASA astrobiologist Caleb Scharf says the fate of life on Earth may hinge on leaving our planet behind

Far above Earth, scientists are using quantum sensors to listen for the faintest whispers of unseen forces that may weave through the universe. Scientists are constantly searching for new clues about the hidden forces that may exist beyond the known laws of physics.

Simulations and satellite data reveal that Earth's magnetic field is more complex than scientists had thought. Scientists studying Earth's magnetic field have discovered that its electric heartbeat flows in the opposite direction from what long-standing models predict.

The sun has burped out bursts of energy called coronal mass ejections that could reach Earth Tuesday night. Forecasters said the vibrant displays could be visible across much of the northern U.S.