NASA said the system is thought to be moving at least 1.2 million miler per hour, nearly twice as fast as our solar system.

Hubble Space Telescope observations of white dwarf star G238-44 has shown that it is "consuming both rocky-metallic and icy material, the ingredients of planets," according to NASA's Goddard Space ...

While our solar system is a fascinating place on its own, exoplanets are even more of a mystery. And one exoplanet in particular is something quite new.

On Feb. 18, 1930, Clyde Tombaugh discovered Pluto, at that time classified as the ninth planet.

The path toward intelligent life, they argue, may be more of a predictable process, unfolding as global conditions allow in a ...

The European Southern Observatory's Very Large Telescope (VLT) imaged both of the planets directly, and PDS 70b has the ...

A comical planetary beauty contest is described, highlighting the unique traits of each planet: Mercury’s fiery nature, Venus ...