Our solar system has two ice giants, Uranus and Neptune, but there may have been a third. According to a new study published ...

Scientists may have found one of the main sources of rocky material for the solar system, forming diverse populations of baby ...

Our solar system is a smashing success. A new study suggests that from its earliest period — even before the last of its nebular gas had been consumed — Earth’s solar system and its planets looked ...

Scientists may have identified one of the Solar System’s most important “planet factories” hidden just beyond Jupiter.

Another puzzle piece in how our solar system formed. The post Scientists Spot What Appears to Be a Ring-Shaped “Planet ...

Four-and-a-half billion years ago, a massive world—possibly as big as the moon or even Mars—orbited our sun before crashing ...

Solar system formation got its most precise explanation yet: a new Max Planck study traces all six carbonaceous chondrite ...

The newborn planetary system appears to be emerging 1,300 light-years away around a baby star known as HOPS-315. Planet-forming materials were first identified using NASA's James Webb Space Telescope.

A planet so distant that its starlight began traveling toward Earth around the Middle Ages has given one University of Cincinnati graduate student the kind of first look astronomers wait years for.

Scientists have discovered a bizarre planetary system where a rocky world orbits farther out than giant gas planets, defying ...