| json_metadata | "{"app":"Musing","appTags":["Planets"],"appCategory":"Planets","appTitle":"What makes scientist so sure that we only have nine planets?","appBody":"<p>When new small planets were found beyond Pluto, the international astronomical union had to update, in a way, change its definition of what a planet was. Accordingly, in order for a celestial planet to be able to acquire the adjective, it must be:</p><p>He must have as much mass as to have a global structure. In other words, it should be in a smooth, spherical shape, not like a large meteor.</p><p>Naturally, it must turn orbit around the Sun or another star. Any object that wanders in space cannot be regarded as a planet.</p><p>He shouldn't share the orbit with another planet, and his orbit should have cleared the crumbs of other objects on it.</p><p>This is the number of planets that fit the above three criteria, as far as we know, only 8 in the Solar System: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. So, there are only eight celestial bodies in our system that we can say sistem yes this is a planet Dolayısıyla. Pluto, once the planet, could not, therefore, be able to meet the third criterion. However, it is not possible to cut it off because it has a global structure and wraps around the Sun. In this case, we name Pluto and other similar planets in a separate classification and give them the name ayrı dwarf planet </p>","appDepth":2,"appParentPermlink":"fk9n2gklx","appParentAuthor":"ishewole","musingAppId":"aU2p3C3a8N","musingAppVersion":"1.1","musingPostType":"answer"}" |
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