To understand how chaotic the early solar system was, we need only gaze at the moon. Its cratered surface bears the scars of ...

WD 1856+534b—a freezing world with a surface temperature of -125 degrees Fahrenheit—exists where planets are normally scoured ...

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

Of the more than 5,000 exoplanets that have been confirmed so far and many more thousands of candidates, most orbit stars the ...

A planet circling at a sharp 90-degree angle to the orbits of its two host stars has now been confirmed. This discovery ...

Researchers say they found a curious dot on infrared images taken 23 years apart that seems to be moving in a manner consistent with a large, distant planet.

The idea that our Solar System is representative of other solar systems hasn't survived the age of exoplanet discovery.

The exoplanet 2M1510 (AB) b makes an unusual orbit around a pair of brown dwarfs, objects bigger than gas-giant planets but ...

The Soviet Union launched the spacecraft known as Kosmos-482 in 1972, one of a series of Venus missions. But it never made it ...

Ever since those two mushroom clouds darkened the skies above the fiery hell that was Hiroshima and Nagasaki, the world’s two ...