GK
SOLAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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any object that orbits our sun
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an spherical body filled completely with gas
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an object that directly revolves around a star, has a nearly spherical shape, and has cleared the neighborhood around its orbit
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a rocky body in a solar system
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Detailed explanation-1: -A planet is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit.
Detailed explanation-2: -Mercury and Venus are the roundest of all. They are nearly perfect spheres, like marbles. But some planets aren’t quite so perfectly round. Saturn and Jupiter are bit thicker in the middle.
Detailed explanation-3: -All orbits are elliptical, which means they are an ellipse, similar to an oval. For the planets, the orbits are almost circular. The orbits of comets have a different shape. They are highly eccentric or “squashed.” They look more like thin ellipses than circles.