Question

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Answer 1

Answer:

A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity. Our galaxy, the Milky Way, also has a supermassive black hole in the middle. When you look up at stars in the night sky, you're

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

because of sun's light

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Answer 2

4)A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter .

5)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 and then the possible Planet Nine.

6) Nuclear fusion creates radiation (heat and light) and makes stars glow. Because planets do not have nuclear fusion, they do not produce their own light. Instead, they shine with light reflected from a star.