Senin, 19 Maret 2012

Goodbye Pluto!
 

Starting on Thursday (24/8) Do not ever say the Planet Pluto slip. Because ever since that day, Pluto was no longer entitled to the title as the planet.

General Assembly of the International Astronomical Society (International Astronomical Union / IAU) to-26 in Prague, Czech Republic, which ended August 25, resulting in a world of astronomy's historic decision to remove Pluto from the list of planets in our Solar System. From now on, members of the Solar System consists of only eight planets, namely Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

 

Issued a decision that Pluto is a planet of the Solar System Family member for 76 years is a consequence of the enactment of a new definition of planet. General Assembly of the IAU Resolution 5A-26 to contain the new definition.

The resolution stated, an object can be called a planet where the sky meets the three conditions, namely orbiting the Sun, is large enough so as to maintain a round shape, and have orbital paths are clear and "clean" (no other celestial bodies in orbit is).

The definition is the first universal definition of the term planet since the planet is known among astronomers, even before the era of Nicolaus Copernicus in 1543 proved that Earth is one planet that rotates around the Sun.

With the new definition, Pluto is not entitled to the name of the planet because it does not meet the third requirement. Pluto's orbit of Neptune's orbit so that the cut in his travels around the Sun, Pluto is sometimes closer to the Sun than Neptune.


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