Across
- 4. The investigation and study of outer space.
- 6. An explosive event marking the death of a massive star.
- 7. High-energy particles from space that bombard Earth.
- 9. A region of space where gravity is so strong that nothing, not even light, can escape.
- 11. An optical instrument that gathers and magnifies light for distant viewing.
- 12. The path that one celestial body takes around another.
- 13. A group of stars forming a recognizable pattern in the sky.
- 14. A person trained to travel and work in outer space.
- 16. The United States space agency responsible for space exploration.
- 17. Extremely bright, active nucleus of a distant galaxy.
- 18. Italian astronomer who made significant contributions to the understanding of the solar system.
- 19. A vast system of stars, gas, and dust held together by gravity.
Down
- 1. The galaxy that includes our solar system.
- 2. Small, rocky object that orbits the sun, typically found in the asteroid belt.
- 3. Our cosmic neighborhood, consisting of the sun and its planets.
- 5. A large spacecraft in orbit around Earth where astronauts live and work.
- 7. A celestial object consisting of ice, dust, and gas that orbits the sun.
- 8. A planet that orbits a star outside our solar system.
- 10. TELESCOPE: A space telescope that has provided stunning images of distant galaxies.
- 15. A cloud of gas and dust in space, where stars are born.