Solar system

New five-planet system contains two that are in the ‘habitable zone’Potentially habitable planets are slightly larger than Earth.

Searching for solar systems like our ownJosh Winn’s hunt for exoplanets may someday reveal habitable, Earth-like worlds.

GRAIL reveals a battered lunar historyTwin spacecraft create a highly detailed gravity map of the moon, finding an interior pulverized by early impacts.

Scientists discover water ice on MercuryIce and organic material may have been carried to the planet by passing comets.

Scientists find first evidence of dynamo generation on an asteroidA meteorite found in Antarctica holds evidence of a once-active dynamo on Vesta.

A far-off solar systemResearchers measure the orientation of a multiplanet system and find it very similar to our own solar system.

Explained: Near-miss asteroidsWhat to do in the event of an asteroid streaking toward Earth? Activate the asteroid ‘fire drill.’

Researchers find evidence of ice content at the moon’s south poleScientists map Shackleton crater, whose unusually bright floor may hint at the presence of ice.

Researchers calculate size of particles in Martian clouds of CO2 snowMars’ carbon dioxide ‘snowflakes’ are about the size of red blood cells.

A close-up view of MercuryResearchers find the planet may have had a dynamic past.