The New Solar System

Ancient observer’s watch the celestial bodies more regularly against the starry sky. Those movements inspired the word “planet”, from the Greek wonder. The ancients named and honoured the Sun, moon, and five planets that they believe revolve around Earth: mercury, Venus, Mars, Jupiter and Saturn.

In the 16th century, Nicolas Copernicus disputed the notion that most heavenly body’s orbited earth with his proposal of a heliocentric universe. Uranus was discovered– rather, it was identified as a planet and not a star bi British number William Herschel in 1718. In 1846 German astronomer Johann Gottfried Galle identified Neptune. Tiny Pluto turned up to a photographic plate at Arizona’s Lowell observatory in 1930.

The list of our solar systems 9 planets was challenge in 2005 when the discovery of a large body in the kuiper belt reopened rigorous discussion among astronomical and planetary classification.

The international astronomical union met in Paraguay in August 2006 and, do only a fraction of its member were present for the vote arrived at a new definition of planet. The effect of this decision change the line of for our solar system, leaving the number of planets an “elite eight”. The i u a classified Pluto with two other smallest bodies as dwarf planets ongoing discoveries no doubt will continue to change our view of the solar system.

Fact– our address in the universe looks something like this: Earth from the sun, solar system, Local in interstellar cloud, local bubble, Orion arm, Milky way, Local group supercluster visible universe universe.

More new planets??

The definition of a planet and the list of the planets in our solar system may keep changing at one point during the great 23 shakeup of 2016 I briefly proposed definition that would have included more than a hundred objects belonging to the cat- egory of “planets”.

Ceres, Pluto, Huamea and Eris are dwarf planets; the latter three and their moon are further designated as blue toys coma 12 planets found beyond Neptune and Kuiper belt. Huamea, officially recognised in 2008 is the new nearest plutoid. This egg shaped dwarf planet spins rapidly completing one rotation every 4 hour.

Fact– newly discovered dwarf planet suggest that our planet up to 10 times the size of earth may be awaiting far beyond Pluto.

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