jorgietorres729 jorgietorres729

29-08-2017
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When was Pluto formally downgraded from planet to dwarf planet? A. After The New York Times published an article about Pluto B. After a vote by the International Astronomical Union C. After Dr. Tyson received a letter from a concerned child D. After the Hayden Planetarium's solar system exhibit opened

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brainsplatter brainsplatter

29-08-2017

The astral being we call Pluto was downgraded after B.) A vote by the International Astronomical Union

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holesstanham holesstanham

24-12-2019

Answer:

B. After a vote by the International Astronomical Union.

Explanation:

Pluto was downgraded following a meeting of the International Astronomical Union (IAU) in August 2006. The Union revised what astronomy defined as "planet," and settled on three essential characteristics that a celestial body needs to have in order to be considered a planet: the object should be in orbit around the Sun, it should have sufficient mass to assume a nearly round shape and it should have cleared the neighbourhood around its orbit. Following a vote, it was established that Pluto did not fulfill the necessary requirements to be considered a planet.

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