Astronomers have detected an Earth-size planet candidate orbiting a nearby star once a year, making it a promising target for future studies.

Add Yahoo as a preferred source to see more of our stories on Google. An artist's impression of a planetary system with four planets, around a small red star, called LHS1903 with a large reddish-brown ...

By Will Dunham WASHINGTON, March 16 (Reuters) - Astronomers have spotted a planet orbiting a star in our neighborhood of the ...

What happens when a planet defies every expectation of how worlds are supposed to form and move? In the nu Octantis system, astronomers have confirmed the existence of a planet that orbits in the ...

A planet circling at a sharp 90-degree angle to the orbits of its two host stars has now been confirmed. This discovery challenges long-standing ideas about how planets form and orbit in the cosmos.

Astronomers have spotted a molten alien planet orbiting a star in our neighbourhood of the Milky Way galaxy that has a surface not unlike a vision of hell.

Theorbits of Jupiter, Saturn, Uranus and Neptune may have been altered by the fly-by of an enormous object from deep space, billions of years ago. According to a pre-print research paper, which is yet ...

The Sun is an incandescent but benevolent dictator. For billions of years, it’s kept our star system well organized through the influence of its powerful gravity. All the planets revolve around it on ...

This illustration shows an exoplanet orbiting around two brown dwarfs –– objects bigger than gas-giant planets but too small to be proper stars. ESO/M. Kornmesser Astronomers have discovered a ...

Add Yahoo as a preferred source to see more of our stories on Google. Seven planets are aligning in the night sky this week, creating a brief chance to see a "planetary parade." Worldwide, the best ...

Seven planets are aligning in the night sky this week, creating a brief chance to see a "planetary parade." Worldwide, the best day to see the alignment is today, Feb. 28. Mercury, Venus, Mars, ...