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Earth’s Fall Equinox Ushers In Astronomical Autumn

Our Planet Is About to Reach Its Greatest Distance From the Sun

From Ancient Charcoal, Hints of Wildfires to Come

Life After Asteroid Bennu

A ‘Big Whack’ Formed the Moon and Left Traces Deep in Earth, a Study Suggests

What’s Inside the Earth’s Core?

How to Watch the ‘Green Comet’ in Night Skies

Is Time Running Out for the Leap Second?

A Partial Solar Eclipse Will Put On a Show. Here’s How to Watch.

The Juicy Secrets of Stars That Eat Their Planets

Reaching Closer to Earth’s Core, One Lava Scoop at a Time

Killer Asteroids Are Hiding in Plain Sight. A New Tool Helps Spot Them.

NASA’s SpaceX Crew-2 Departs International Space Station

NASA Says an Asteroid Will Have a Close Brush With Earth. But Not Until the 2100s.

Chinese Astronauts Arrive at Space Station

Will the Next Space-Weather Season Be Stormy or Fair?

Extraterrestrial Plutonium Atoms Turn Up on Ocean Bottom

A Chinese Rocket Is Tumbling Back to Earth. Where Will It Land?

The Lyrids Meteor Shower Will Peak in Night Skies

Video of NASA’s Mars Helicopter in Flight