Teacher

2. - The shape of the Milky Way galaxy.
5. - Energy that travels through space in the form of waves or particles.
8. - The power that makes stars shine and move objects in space.
9. System - The sun and all the objects that orbit around it.
13. - A bright, shining object in space that produces light and heat.
14. - A natural or artificial object that orbits a planet.
15. - A person trained to travel and work in space.
17. - A planet that orbits a star outside our solar system.
18. Rays - High-energy particles that travel through space at high speeds.
19. - A region in space where gravity is so strong that nothing can escape.
20. - A bright object in space, powered by a supermassive black hole.
22. - The layer of gases surrounding a planet.
24. - A rocky object that orbits the sun, mostly found in the asteroid belt.
26. - The energy emitted by stars and other celestial objects.
27. - Invisible material that makes up most of the universe’s mass.
29. - The galaxy that contains our solar system.
30. - The force that pulls objects toward each other.

1. - A group of stars or galaxies held together by gravity.
3. - A large object that orbits a star.
4. - A giant cloud of dust and gas where stars are born.
6. - A tool used to observe distant objects in space.
7. - The path a planet or moon takes around a star or planet.
10. - The process that powers stars by combining atoms.
11. - A large hole on the surface of a planet or moon, caused by an impact.
12. - A streak of light produced when a meteoroid burns up in the atmosphere.
16. - Everything that exists, including all galaxies, stars, and planets.
21. - A small icy body that releases gas and dust, forming a tail.
23. - A spinning neutron star that emits beams of radiation.
25. - The explosion of a star, making it very bright for a short time.
28. - A huge system of stars, dust, and gas held together by gravity.