The team proposed that a single encounter with an object between two and fifty times the mass of Jupiter could explain the ...

Astronomers analyzing archival images from JWST have discovered an unexpectedly vast population of the smallest asteroids ever seen in the asteroid belt between Mars and Jupiter.

The planet named after the king of the gods in Roman mythology is visible all night long right now, rising in the east at ...

NASA and ESA’s Hubble Space Telescope has been observing the outer planets through a program called OPAL (Outer Planet ...

The winter stars are like that. They're bright, sparkly and arrive "from a distance" low on the eastern horizon and gradually ...

New research on Ceres reveals hidden organic materials, suggesting subsurface reservoirs and internal energy sources.

Scientists with NASA's Juno mission to Jupiter have discovered that the volcanoes on Jupiter's moon Io are each likely powered by their own chamber of roiling hot magma rather than an ocean of magma.

New research on Comet 67P indicates that its water may be similar to Earth's, contradicting earlier findings by Rosetta's ...

Observations made of Jupiter’s moon Io during the Juno mission’s flybys helped astronomers confirm how and why Io became the most volcanic world in the solar system.

Hundreds of volcanoes and lava lakes on Jupiter’s moon Io are likely powered in the same way as Earth’s volcanoes.

Over the last ten years, OPAL has observed Uranus' northern hemisphere, which has faced the inner solar system for the ...

Massive object passing through solar system is a better explanation for nature of orbits of Jupiter, Saturn and Neptune ...