Ground and space-based telescopes have confirmed a microlensing event caused by a rogue planet wandering silently through the ...

Astronomers have uncovered a massive gas planet in a place it should never exist, orbiting one of the smallest stars in the ...

Most of the planets we’ve identified are in orbit around stars and formed from the disks of gas and dust that surrounded the ...

Forty light-years away, seven Earth-sized planets orbit around a dim red dwarf star in one of the most tightly packed ...

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 ...

Simultaneous ground- and space-based observations of a newly discovered free-floating planet have enabled direct measurement of its mass and distance from Earth, according to a new study. The findings ...

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.

Technically, the sun is a G-type main-sequence star — specifically, a G2V star. The "V" indicates that it is a dwarf, Tony ...

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