A thick layer of haze around the ultra-low-density planet Kepler-51d likely obscures not only the strange planet's ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. This image of Pluto was made after the New Horizons spacecraft flew past the dwarf planet on July ...

Since the discovery of exoplanets, a planet that orbits stars outside the solar system, astronomers and scientists have been astounded by the strange characteristics of these extrasolar planets. To ...

A strange 200 million-year-old object with the mass of a planet has been discovered 20 light-years from Earth, outside our solar system. The "rogue," as it's referred to by researchers, is producing ...

Pluto is a bit of a loner. The dwarf planet is no longer considered a regular planet; it does not orbit on the same plane as the solar system's eight planets; and its orbit is both highly elliptical ...