Astronomers have finally weighed a wandering “rogue” planet, uncovering a Saturn-mass world flung into the galaxy after a ...

On January 1, 1801, a Sicilian astronomer named Giuseppe Piazzi discovered the dwarf planet Ceres orbiting the sun between ...

Gaia data reveals signs of planets forming around young stars by measuring stellar motion, identifying planetary, brown dwarf, and stellar companions in early star systems ...

In 45 B.C., New Year's Day was celebrated on Jan. 1 for the first time as the Julian calendar took effect. In 1801, Ceres, classified as a dwarf planet, was discovered by Giuseppe Piazzi. In 1803, two ...

For centuries since the Sun was declared the center of the solar system in the 16th century, society held the belief that any ...

Earth exoplanets orbiting M-dwarf stars, identifying specific candidates that may have retained detectable atmospheres.

SANTA CRUZ — Xi Zhang, a professor of Earth and planetary science at UC Santa Cruz, has discovered that an exoplanet classed ...

Scientists using the James Webb telescope observed a distant exoplanet with an atmosphere of soot and diamonds, challenging ...

Planet-forming collisions were once thought to be rare—new observations suggest they may occur far more often than scientists ...

One of the primary goals of the James Webb Space Telescope (JWST) is to detect atmospheres around exoplanets, to try to suss ...

Astronomers have uncovered a massive hidden planet and a rare “failed star” by combining ultra-precise space data with some of the sharpest ground-based images ever taken. Using the Subaru Telescope ...

Astronomers using W. M. Keck Observatory and Subaru Telescope on the Big Island’s Maunakea discovered a massive planet and a brown dwarf orbiting distant stars — two rare companions that deepen our ...