Our solar system's journey around the center of the Milky Way takes it through varying galactic environments, and one may have had a lasting impact on Earth's climate, according to a new study.

It came from outer space! In the early morning of June 30, 1908, people in the remote Tunguska region of Siberia beheld an ...

Scientists scanning the Moon’s lunar rugged surface have made an unexpected discovery—two enormous canyons, each plunging 2.2 ...