1
Are the smallest and densest stars known in the universe.
2
Are colossal balls of gas.
3
A celestial body that is in orbit around the Sun.
4
Are one of the most powerful explosions in the universe.
5
Is everything
6
Are interstellar clouds of gas and dust where new stars are born.
7
Are colossal systems of stars, planets, gas, and dust held together by gravity.
