Across
- 1. system the collection of planets, moons, and other objects that orbit the Sun
- 3. the study of the origin, structure, and evolution of the universe
- 5. a luminous sphere of plasma held together by gravity, like the Sun
- 7. the four-dimensional continuum combining the three dimensions of space with time
- 10. a small piece of rock or metal that burns up as it enters Earth’s atmosphere
- 13. a cloud of gas and dust in space, often the birthplace of stars
- 17. a system of stars, gas, and dust held together by gravity
- 18. a small icy body that orbits the sun, often displaying a visible tail
- 19. a group of stars forming a recognizable pattern in the sky
- 21. a planet that orbits a star outside our solar system
- 23. hole a region in space with gravitational pull so strong that not even light can escape
- 24. the branch of astronomy that deals with the physical properties of celestial bodies
Down
- 2. the distance that light travels in one year, about 5.88 trillion miles
- 4. a powerful explosion of a star at the end of its life cycle
- 6. an instrument used to observe distant objects in space
- 8. giant a large, cool star that is in the final phase of its life
- 9. Space Telescope a space-based observatory that captures high-resolution images of distant objects in space
- 10. Way the galaxy that contains our solar system
- 11. a highly energetic and distant galaxy with an active supermassive black hole at its center
- 12. a small rocky body that orbits the sun, primarily in the asteroid belt
- 14. a large celestial body that orbits a star, like Earth or Mars
- 15. matter a type of matter thought to make up most of the universe's mass, detectable only by its gravitational effects
- 16. a natural satellite that orbits a planet
- 20. the curved path of an object around a star, planet, or moon
- 22. an event where one celestial body passes in front of another, blocking its light