Discovered in 1930, Pluto was long considered our Solar System's ninth planet, but was unseated in 2006 after the discovery ...

The 35-year-old law bars adult children and their parents from suing for wrongful death caused by medical malpractice. Ponder ...

For years, astronomers have toyed with the idea that the Sun hides an extra planet so distant and dim that even the best ...

Earth has four seasons, but do other planets in our solar system also have hot summer days and cold winter nights?

Discovered in 1930, Pluto was long considered our Solar System's ninth planet, but was unseated in 2006 after the discovery ...

Kosmos 482 was launched by the then-Soviet Union in 1972 as part of a series of missions bound for Venus. But this one never ...

Astronomers have long speculated about an unseen planet lurking in the solar system's outer edge. This hypothetical world, ...

In contrast, some planets in our solar system have massively different tilts ... This is because planets' orbits tend to be ellipses, rather than perfect circles. As a result, some planets ...

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