Pluto a planet again? (Video)

Pluto a planet again? (Video)

Pluto a planet again? (Video)
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Last week, American scientists gathered to discuss what is the definition of the planets and how they should be called Pluto.

Harvard-Smithsonian Center for Astrophysics three experts - two characters the planet Pluto supporters and one opponent - presented their views before an audience full of scholars, teachers, and ordinary members of the public. And the way the vote was decided that Pluto should be called a planet again.

This debate was opposed in 2006 the International Astronomical Union IAU decision taken by who has changed the definition of planet. And the biggest victim of this decision was Pluto, the planet lost the name because it was too small to compete with eight other larger and far more spectacular bodies revolving around the sun. 2006 became the basis for the definition of the fact that the edge of the solar system discovered a number of bodies, which are similar to the size of Pluto, and some even higher - and still they are not worthy of the name of the planet. This is why this should be called Pluto?

Accordingly, the IAU decided to assign Pluto and other small Solar System bodies "dwarfs planets" - a new category, which will be followed Ceres and other similar bodies, rotating asteroid belt between the orbits of Mars and Jupiter (Eris, Haumea, Makemake) and the Kuiper band for Neptune's orbit .

Everything seemed logical and was not disadvantaged - Pluto is still a planet nominally, but very small, right? It appears not. Wrongs done Pluto, astronomers magazine National Geographic described the Nadia Drake:

"No matter how it is monitoring the levels of the royal cobra cobra is not, so the dwarf planet is not a planet. They are two of the three criteria outlined in the IAU: is round and revolves around the sun. However, unlike any the world from Mercury to Neptune, have not caught the dwarf planet large enough to dominate its orbit, and cleanse them from other solar systems, or to attract crumbs, or disposing into other orbits.

Jupiter around you brushed around the Earth yourself cleansed. Ceres in the main asteroid belt, not himself. And Pluto is not himself. Therefore, in my world, Pluto is not a planet, "- said the IAU Minor Planets Center Deputy Director Gareth Williams, the dispute presented IAU definition of the position, writes sciencealert.com.au.

It is very difficult debate was made more difficult by the fact that the definition of the planet during the millennium that other people knew about the existence of planets in the solar system have evolved more than once. The Planet - is a culturally defined term whose meaning has changed more than once. I feel that, from this point of the IAU did not try to change the word "planet" values, "said the Harvard-Smithsonian Center for Astrophysics historian Owen Ginerichas.

So, looking at this complex issue, the three experts expressed their different opinions:

1 The historian Owen Gingerich said planet - it is culturally defined term, the notion of change over time. Pluto is a planet.

2nd IAU minor planet center agent Gareth Williams argued: the planet - is spherical body that travels around the sun clean their orbit. Pluto is not a planet.

3 planets program at Harvard Origins of Life Initiative, said: Planet - the lowest spherical lump of matter that formed a star or stellar remnant. Pluto is a planet.

The third argument to the audience sounded convincingly, it was voted that Pluto be called a planet. Although the official decision of the celestial classification adopted by the International Astronomical Union IAU and the sooner its decision has not changed.

Throughout the debate, you can see the clip here: