What started as a mysterious red dot in images taken by University of Arizona astronomers has been confirmed as a huge, newly forming planet.

Jupiter’s moon Io is the most volcanically active place in the solar system. Let me tell you just how volcanic it is.

The crew will spend much of the first 25 hours of their 10-day flight orbiting Earth as they troubleshoot toilet troubles and ...

A new study shows Saturn’s magnetic shield is uneven, pulled off-center by rapid rotation and charged particles from its icy moon Enceladus.

Stardust sold geoengineering to investors. Now it needs to sell it to the public.

Earth likely formed from inner Solar System material alone, raising fresh questions about the origin of water on our planet.

Planetary scientists Paolo Sossi and Dan Bower from ETH Zurich have published a peer-reviewed study in Nature Astronomy ...

Astronauts Reid Wiseman, Victor Glover, Christina Koch and Jeremy Hansen blasted off at 6:35 p.m. ET Wednesday from the ...

A newly studied planetary system appears to break the expected order of worlds, revealing an unusual arrangement that current theories struggle to explain. “Many Vile Earthlings Munch Jam Sandwiches ...

A new analysis of meteorite isotopes challenges long-held ideas about Earth’s origins, suggesting our planet may have formed ...

For years, planetary scientists have argued that some of the material that built Earth must have drifted in from beyond ...