NEW YORK — (AP) — Six planets are hanging out in the sky this month in what's known as a planetary parade. Catch the spectacle while you can because it's the last one of the year. These linkups happen ...

In the early chaos of planetary formation, before crusts cooled or atmospheres settled, water might already have been ...

Six planets are hanging out in the sky this month in what’s known as a planetary parade. Catch the spectacle while you can because it’s the last one of the year. These linkups happen when several ...

Tests on olivine hint that water-rich exoplanets could generate H2O internally, possibly explaining ocean worlds and even some of Earth’s early water.

Our galaxy's most abundant type of planet could be rich in liquid water due to formative interactions between magma oceans ...

CAPE CANAVERAL, Fla. (AP) — Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby sun-like star, providing a precious peek into the dawn of our own solar ...

Astrophysicists are uncovering planets that echo worlds from the works of James Cameron, Andy Weir and George Lucas. Take a look. THE MULTI-STAR SYSTEM: Alpha Centauri James Cameron’s Avatar (2009) is ...

Fresh off the excitement of the Perseids meteor shower is a chance to see six planets lined up in the sky at once. These events, colloquially known as planet parades, occur occasionally with the most ...

In the hunt for extraterrestrial life, we usually look for planets orbiting sun-like stars and icy moons. But there is another possible candidate—planets circling white dwarfs, the hot, dense remnants ...

A team of scientists at the Institute for Advanced Study School of Natural Sciences in Princeton, New Jersey, might have found a new dwarf planet, potentially leading to more evidence of a theoretical ...