Over the past decade or so, astronomers have speculated about the characteristics of rogue planets in the Milky Way galaxy.

The possibility that an additional planet may be hidden far into the solar system was touted more than a century ago. In 1983 ...

Warmer climates than Earth’s could accelerate life’s development, potentially increasing the number of planets with more ...

Astronomers used the Hubble Space Telescope to image "peculiar" galaxy Arp 184 (NGC 1961) about 190 million light-years away.

An Egyptian sarcophagus shows the sky goddess Nut as being covered in stars and having a dark, undulating curve running ...

To see the Milky Way in all its glory ... Orion 8 / Wikipedia Public Domain Through May and June this year many of the planets are behind the Sun and not on view. Toward August however, Venus ...

Spotted thanks to a fleeting light distortion in 2011, a mysterious duo — a tiny star and its hefty companion — has turned ...

but the new definition of a planet requires the celestial body to have enough gravity to clear its orbital path from other bodies. MORE: Binary star system found near the Milky Way's black hole ...