Scientists have discovered 12 previously unknown moons orbiting Jupiter, and one of them is a real oddball.
Learn more about NASA's New Horizons mission, which performed history's first flyby of the Pluto system on July 14, 2015.
A new estimate pegs the thickness of Mercury's crust at just 16 miles (22 kilometers) — nearly 30 percent thinner than previously thought.
This week, the small and distant dwarf planet Pluto will reach opposition, the time of the year when the object is closest to Earth and brightest in the sky. Here's how to track it with mobile apps.
Studying the angles of river features on Mars helped a trio of scientists determine that the water fell from the air rather than seeping up from the ground.
Scientists have put together new maps of Pluto and its moon Charon, showing the peaks and valleys of their surfaces in incredible detail.
New research shows the closest-ever views of features in Jupiter's swirling auroras, revealing the complicated footprints left by its moons Io and Ganymede.
Nearly every meteorite that falls onto Earth may ultimately come from a half dozen or so lost worlds that splintered apart soon after the birth of the solar system, a new study finds.
NASA's Dawn spacecraft has gotten its best-ever looks at the weird bright spots that speckle the dwarf planet Ceres.
NASA has awarded Colorado-based company Black Swift Technologies (BST) a contract to develop an aerial vehicle for atmospheric observations of Venus.
Nearly 100,000 high-resolution images of a comet, two asteroids, Earth and Mars are now all available to the public online.
On Saturday evening, should local weather conditions permit, you'll be able to enjoy a view of a waxing gibbous moon hovering near the "king of the planets," Jupiter.
Scientists are following a trail of interstellar dust all the way back to the formation of the solar system.
NASA's New Horizons spacecraft has woken up from hibernation to prepare for a historic New Year's Day flyby.