Astronomy

4. A small rocky or metallic object that travels through space, typically smaller than an asteroid.
5. Celestial objects composed of hot, glowing gases.
6. A celestial object composed of ice, dust, rock, and other organic compounds that orbits the Sun in an elongated elliptical path.
8. The star at the center of our solar system.
10. The distance that light travels in one year is approximately 5.88 trillion miles or 9.46 trillion kilometres.
11. Hole A region in space with a gravitational pull so strong that nothing, not even light, can escape from it.
12. Unit (AU) The average distance between the Earth and the Sun, is approximately 93 million miles or 150 million kilometres.
13. A massive system of stars, dust, and gas held together by gravitational forces.

1. A celestial body that orbits a star is spherical and has cleared its orbit of other debris.
2. A group of stars that form a recognizable pattern or shape in the sky.
3. System A collection of planets, moons, asteroids, comets, and other celestial bodies that orbit around a star, specifically referring to our system centred around the Sun.
7. A powerful explosion occurs at the end of a massive star's life cycle, resulting in the release of a tremendous amount of energy.
9. An interstellar cloud of dust, hydrogen, helium, and other ionized gases.