Question

reclassified Pluto.
3. What is the new definition of a planet?
4. On which ground was Pluto disqualified?
is the new​

Answer 1

Answer:

3. 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.

4. Without a new definition, the discoveries raised the prospect that there would soon me 50 or more planets in the Solar System. Pluto was automatically disqualified because its highly elliptical orbit overlaps with that of Neptune and so it could only be classed as a dwarf planet.

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