If I were on Mars, how often would I see Earth transit the Sun? Steven RiserConyers, Georgia From Mars, Earth transits the Sun four times in a 284-year cycle. The transits occur in either May or ...

“Observations of interstellar objects are still rare enough that we learn something new on every occasion,” said Shane Byrne, ...

A Nvidia-backed startup plans to begin mining Bitcoin in space later this year, arguing orbital data centers could reshape the economics of crypto mining.

Chinese official calls for prioritizing Neptune orbiter mission A senior Chinese space scientist and delegate to the country’s national congress is proposing the prioritization of an unprecedented ...

A storm from the Sun can make a planet’s sky glow or a spacecraft’s computer stumble. At Mars in May 2024, it did both, just without the auroras people photographed on Earth.

A potential new mineral on Mars forms when iron sulfates are heated above 100°C. Data from Valles Marineris regions suggest ...

Chalk up another victory for “Conan the Bacterium”—a rugged germ that fresh research suggests could conquer the solar system.

What happens when a solar superstorm hits Mars? Thanks to the European Space Agency's Mars orbiters, we now know: glitching ...

This low-angle self-portrait of NASA’s Curiosity Mars rover shows the vehicle at the site from which it reached down to drill into a rock target called “Buckskin” on lower Mount Sharp.

For more than a decade, NASA’s Curiosity rover has been climbing a Martian mountain, reading the planet’s ancient history layer by layer. Now, a discovery of web-like rock for ...

NASA’s Curiosity rover has discovered tiny mineral nodules on Mars that suggest groundwater persisted on the planet much longer than previously believed, expanding the window during which microbial ...

Craters, craters, and yet more craters: this snapshot from ESA's Mars Express is packed full of them, each as fascinating as ...