Across
- 2. They neither spiral nor elliptical
- 4. is a congregation of solar system, stars, dusts, and gases held together by gravity
- 7. are large groups of smaller galaxy clusters or galaxy groups and are among the largest known structures of the cosmos
- 9. are composed of alloys of iron and nickel
- 10. outer visible layer of the sun
- 12. is a spherical collection of stars that orbits a galactic core as a satellite
- 14. is a natural science which is the study of celestial objects
- 16. are composed of a mixture of stony silicate material and iron.
- 18. asteroids that orbits outside the outer solar system
- 19. most common type of meteorites
Down
- 1. common type of galaxy
- 3. is a unit of length used informally to express astronomical distances
- 5. is a planet that orbits a star other than the Sun, a stellar remnant, or a brown dwarf
- 6. Stars including their creation, evolution ,and death
- 7. refers to group or stars within the galaxy that resembles each other in terms of age, spartial distribution, or chemical composition
- 8. is the cloud of gas that became the sun
- 11. used to study the features of the sun
- 13. are minor planets that circe the Sun in a region called the Asteriod Belt
- 15. are glowing fragment of rock matter in space that burn and glow upon entering the atmosphere of Earth.
- 17. is the large, dim region surrounding the entire galaxy