Why is Pluto No Longer Considered a Planet?

Pluto was first discovered in 1930 by Clyde W. Tombaugh. Astronomers had always been thought that there would be a ninth planet in our Solar System, which was called planet X. After a year of observations, Tombaugh finally discovered an object in the right orbit, and declared that he had discovered Planet X. They named it Pluto. The name of the Pluto (the Roman god of the underworld) was suggested 11 years old girl. But in 2006 it is declared that Pluto is no longer a Planet. On February 17, 2018 the Washington Post wrote, that six years old Irish girl wrote to a NASA asking for Pluto’s return to the solar system planetary club.

People Voted for new Names for the Satellites of Pluto

In 2011 and 2012 the group of astronomers by leadership of Mark Showalter discovered twonew satellites of Pluto. These are the forth and fifth satellites of Pluto. The dimensions of P4 are from 13 up to 34 km, and the P5 are form 15 up to 24km. According to rules of the International astronomical union, the satellites have to receive the names from Greek-Roman mythology, which is connected with underground kingdom of Aida. The discovers offered 12 mythology names, and everyone can vote for the name, which likes to him. In the voting totally participated 450 people, from them 174,000 voted for Volcano (the Roman God of underground fire), and 99,400 voted for Cerberus (the three-headed dog guarding a gate of the underground world).

Star HD 10180 May Harbor Record Number of Planets

A sun-like star some 127 light years away may harbor a record number of planets, nine, spotted in another solar system. Our own solar system only possesses eight planets, with the recent demotion of Pluto to dwarf planet status by astronomers. Accepted for publication by the journal Astronomy and Astrophysics, the report by astronomer Mikko Tuomi of the United Kingdom’s University of Hertfordshire, looks at HD 10180, an often-examined star in the constellation of Hydrus, the water snake.

Pluto May Have Rings

Jupiter, Saturn, Uranus, and Neptune all have rings, leaving Pluto as the only outer planet without rings. But PSI Senior Scientist Henry Throop would love to change that. Using both giant telescopes on Earth, and a small spacecraft currently on its way to Pluto, Throop is searching for signs that Pluto may have rings orbiting it, just like its neighbors. Astronomers expect that Pluto could well have rings, they’ve just never been discovered. Until now astronomers haven’t found any rings. Throop is working with NASA’s New Horizons mission, which is sending a spacecraft to Pluto, to arrive in 2015.

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