Question

what is a planet?How many planets are there in the solar system.write down​

Answer 1

Answer:

eight planets

There are eight planets in the solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

Explanation:

This seemingly simple question doesn't have a simple answer. Everyone knows that Earth, Mars and Jupiter are planets. But both Pluto and Ceres were once considered planets until new discoveries triggered scientific debate about how to best describe them—a vigorous debate that continues to this day. The most recent definition of a planet was adopted by the International Astronomical Union 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.

Answer 2

Explanation:

There are eight planets in our Solar System.

The order of the planets in the solar system, starting nearest the sun and working outward is the following: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune