Earth Day began as a protest in 1970, but its meaning has evolved. Here’s how it changed - and what it represents today.

NASA spokesperson Lauren Low told PolitiFact that one of the reasons Earth appears duller is because the new photo was taken at night, with only moonlight lighting the planet. The 1972 photo was taken ...

More than 50 years after the famous “Blue Marble” photo was taken from Apollo 17, its spiritual followup was snapped from Artemis II. NASA shared out an image entitled “Hello, World,” taken by Artemis ...

The crew of NASA’s Artemis II spacecraft has shared stunning new photos of Earth as they complete their mission around the Moon and back. The images were released Friday, the crew’s second day in ...

High-energy particles called galactic cosmic rays (GCRs) bombard unprotected objects in space, often causing damage. Earth, however, is protected by its magnetic field, which creates a protective ...

The hunt for ET has taken a massive leap forward as scientists identified 45 Earth-like worlds tucked away in the cosmos's "Goldilocks" zones. Boffins at the Carl Sagan Institute at Cornell University ...