Barnard’s Star has fascinated astronomers for decades. At just six light-years away, it is the second-closest single star to our own Sun. Now, two separate research teams have found solid evidence ...

(Earth, of course, is the eighth planet, and poor Pluto was demoted in 2006 and is now considered a dwarf planet.) Mars, Venus, Jupiter, Mercury and Saturn should be visible to the naked eye.

Ceres, the largest object in the asteroid belt, may hold answers to fundamental questions about the Solar System. This dwarf planet, positioned between Mars and Jupiter, is the only inner Solar System ...

In August 2006 the International Astronomical Union General Assembly adopted a resolution to reclassify Pluto as a dwarf planet. The reasoning was that it didn't satisfy one of three newly defined ...

Pluto was discovered at Lowell Observatory in Flagstaff, Arizona in 1930 and was considered our ninth planet until 2006. The International Astronomical Union reclassified Pluto as a dwarf planet ...

A planet killer capable of ripping them to pieces has been discovered, say space scientists. Researchers believe they've found evidence that a white dwarf may have torn a Jupiter-sized planet apart.

They found that a planet orbiting a white dwarf star would offer a warmer climate than one orbiting a main sequence star. Among the roughly 10 billion white dwarf stars in the Milky Way galaxy ...