Astronomy

3. The explosive death of a massive star.
4. A luminous ball of gas, held together by its own gravity. Stars are powered by nuclear fusion in their cores.
5. A building equipped with telescopes and other instruments for astronomical research.
6. A vast system of stars, gas, dust, and dark matter held together by gravity.
7. A building or room with equipment that projects images of the stars and planets onto a dome.
9. A rocky or metallic object that orbits the Sun, typically found in the asteroid belt.
10. A celestial object consisting of ice and dust that orbits the Sun
11. An interstellar cloud of gas and dust. Nebulae are often regions where new stars are forming.

1. A luminous ball of gas, held together by its own gravity. Stars are powered by nuclear fusion in their cores.
2. A group of stars that appear to form a pattern in the sky, often named after mythological figures or objects.
7. A celestial body that orbits a star. Earth is a planet in our solar system.
8. A natural satellite that orbits a planet. Earth has one moon, and some planets have many.
12. The totality of all space, time, matter, and energy.