What are the features of planet?
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Answer:
the four planets close to sun- Mercury, Venus, Earth, Mars- are terrestrial planets. they have rocky surfaces enclosed by relatively shallow atmosphere- Jupiter, Saturn, Uranus and Neptune are outliers . they are larger than terrestrial planets,but their cores are small and icy.most of their sizes are formed by combination of gasess that become denser and hotter as you get close to the core. scientists count eight planets over all. Pluto was reclassified as a dwarf planet in 2006
It says a planet must do three things: It must orbit a star (in our cosmic neighborhood, the Sun). It must be big enough to have enough gravity to force it into a spherical shape. It must be big enough that its gravity cleared away any other objects of a similar size near its orbit around the Sun.