A few decades ago, the Solar System had nine planets, but in 2006 the International Astronomical Union reclassified Pluto as a dwarf planet. Shortly thereafter, reports emerged about the possible ...

Our solar system has eight planets but in recent years ... Apart from Pluto, which was demoted from a planet to a dwarf planet in 2006, no planets have been found beyond Neptune or the Kuiper ...

"These objects really could be anywhere in the solar system at any given time." One million alien visitors from another star system could already be lurking in the solar system. We aren't talking ...

Since its discovery in 1930, until 2006, Pluto was counted as the ninth planet in the solar system. In 2006, the International Astronomical Union reclassified it as a ‘dwarf planet’, and our ...