Earth's Moon: NASA's Galileo spacecraft took this image of Earth's Moon on Dec. 7, 1992, on its way to explore the Jupiter system in 1995-97. The Moon is Earth's only natural satellite.

NASA said the system is thought to be moving at least 1.2 million miler per hour, nearly twice as fast as our solar system.

Astronomers used a 3D global computer model to compare the climates of exoplanets in different stellar and orbital configurations. They found that a planet orbiting a white dwarf star would offer a ...

NASA sent a valentine to space lovers on social media this week posting images of heart shapes found on Mars. The pictures ...

The red Tesla Roadster was mistaken for an undiscovered asteroid by astronomers.

Revolutionary technique allows astronomers to capture incredibly high-resolution images of distant galaxies and supermassive black holes.

Engaging articles, breathtaking images and expert knowledge ...

This week, see what makes loggerhead sea turtles “dance,” track a cosmic “ghost particle,” uncover an ancient basilica, and ...

A recently discovered asteroid has on average a 2% chance of hitting Earth in 2032. While those odds of an impact are slim, astronomers are closely tracking the space rock.

“When it’s brightest, Venus appears as an eerily eye-catching beacon,“ EarthSky wrote. ”Many mistake it for a UFO. It’s ...

A laser-engraved, intricately decorated dial with an unusual arrangement proves there is more than one type of ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.