Sarah Lewin

A satellite glimpsed yesterday's (Sept. 13) partial solar eclipse three times from space. Viewers in South Africa saw it just once, and tracked their experience in new skywatching photos.

Something strange is happening on Io: The Jupiter moon's vigorous volcanoes are mysteriously offset from where scientists expected, and its underground magma oceans may be the cause.

An "over-the-top" complex mix of craters, ice flows, mountains, valleys and apparent dunes coexist in the latest images dispatched from the New Horizons spacecraft's flyby of Pluto.

A new infographic traces the evolution of video-game spaceships, from the simple dots and dashes of 1962's "Spacewar!" to the hyperrealistic Anaconda craft of "Elite: Dangerous" (2014).

A stunning video shows a breathtaking aurora light display captured from the International Space Station by astronaut Scott Kelly, who said it was like no other aurora he'd ever seen.

An epic moon hangs over the medieval village of Monsaraz, in Portugal, in a new twilight photograph.

The Star Wars toys awaken, a looming 'supermoon' eclipse overshadows a solar eclipse, and hoverboard technology aims for the stars in Space.com's best stories for this week.

NASA is working to develop laser-based communications systems that will allow far-flung spacecraft to beam data home far faster than previously possible.

Stephen Petranek thinks humans will live on Mars within 20 years, and he states his case in a new book, "How We'll Live on Mars."

Mars One seeks billionaires, Ceres and Dione get close-ups, a Martian hoax is debunked and Stephen Hawking solves a black hole conundrum in Space.com's top stories for this week.

Rainbow jets of gas blast away from twin dying stars in the Hubble Space Telescope's vivid new shot of the Twin Jet Nebula.

A new NASA model is showing just how fast sea levels are rising around the world as a result of climate change.

The ancient lunar surface once erupted with geysers of lava — and now, scientists think they know what caused these fiery fountains.

An astronomer and amateur musician has coaxed a haunting melody from a star's distinctive twinkle.

A European rocket launched into space from a South American spaceport Thursday (Aug. 20) on a mission to deliver two new communications satellites into orbit for a pair of telecommunications giants.

Journalist Stephen Petranek thinks living on Mars is far more than science fiction — he believes it will happen within the next 20 years.

Gas-giant planets such as Jupiter and Saturn form quickly, thanks to the fast accretion of pebble-size building blocks, new research suggests.

A summer challenge invites kids ages 2 to 8 to develop "out-of-this-world" creations — with a grand-prize trip to a SpaceX rocket launch.