SOLAR SYSTEM

Detailed explanation-1: -In August 2006 the International Astronomical Union (IAU ) downgraded the status of Pluto to that of “dwarf planet.”

Detailed explanation-2: -The year 2006 was one of things lost and found. The solar system lost its former ninth planet and NASA lost a long-serving Mars probe, but scientists found good evidence for dark matter, signs of liquid water flows on present-day Mars, and a planet just a few times more massive than Earth around another star.

Detailed explanation-3: -On August 24, 2006, the International Astronomical Union (IAU) announced it had re-classified Pluto as a dwarf planet. From 1930 until then, Pluto had been considered a normal planet and the outermost planet of the solar system. As technology had advanced, though, astronomers could see fainter objects.

Detailed explanation-4: -On August 24, 2006 at the International Astronomy Union (IAU) General Assembly the ninth planet was scrubbed only 76 years after its discovery. Even weirder is that it actually got voted out, and by astronomers, not planetary scientists.

Detailed explanation-5: -Back in August 2006 astronomers voted to shake up the Solar System, and the number of planets dropped from nine to eight. Pluto was the one cast aside. There was some outcry that Pluto had been destroyed in an instant and was no longer important, and the reverberations were most keenly felt across America.

Detailed explanation-6: -In Prague on August 24, 2006, the International Astronomical Union votes to demote Pluto from the ninth planet from the Sun to one of dozens of known dwarf planets.