The Voyager 1 spacecraft had flown past this moon of Jupiter ... other than Earth. Umbrella-shaped outbursts of magmatic matter rocketed into space from all over Io’s surface.

"This Voyager spacecraft was constructed by the United States of America. We are a community of 240 million human beings ...

Kepler-725c is roughly 2,472 light years from Earth, circling a G9V star in about 207.5 days. Its path brings it into a ...

To gain a better picture of ... and 400 times stronger than Earth's. "It's astonishing that even after 4.5 billion years, enough clues remain to let us reconstruct Jupiter's physical state at ...

No telescope has basked in the night sky quite like this before. Here's what it could reveal about the universe.

If you look just right, the Sun appears to be opening its mouth and laughing at us — and that "smile" is weirder than you'd ...

Astronomers have found a remarkable pair of stars that may finally prove a long-debated theory. Described in the journal ...

It takes Jupiter 12 Earth years to complete a single lap of ... Editor's Note: If you capture a picture of Jupiter and Mercury and want to share it with Space.com's readers, then please send ...

But a team of scientists has created a new way to answer whether aliens exist. Daniel Apai, an astrophysicist and ...

Earth and space mingle in stunning ways for the 2025 Milky Way Photographer of the Year contest. From the “geological masterpiece” of Coyote Buttes, Utah to the sandstone terrain of desolate Ennedi, ...

Once a star reaches the end of its life stage and becomes a red giant, any chance for life is extinguished. This is also true ...

For years, scientists have puzzled over how Mars lost the thick atmosphere it once had. That atmosphere was essential for ...