Space Vocabulary

3. A tool that splits light into different wavelengths
5. A galaxy that does not have a definite shape
6. How hot or cold something is
7. A galaxy shaped like a flat rotating disc
10. A scatter graph showing the relationship between the absolute magnitudes of stars against their spectral types
12. The total amount of energy released from a star
13. All time, space, and everything else
16. A galaxy shaped in an ellipsoidal shape being smooth and nearly featureless
19. A cluster of matter in the universe that constitutes a unit
20. swinging back and forth (like a pendulum)

1. A sphere of plasma held by its gravity
2. The magnitude of a celestial object
4. A system of millions or more stars
8. The brightness of a celestial object from ten parsecs
9. A unit of measure for temperature based on an absolute scale
11. The process in which two nuclei collide to create different products
14. A theory in astronomy where the universe originated from a big explosion
15. The distance between similar points on two successive waves
17. A cloud of gas/dust in outer space
18. A galaxy that our solar system is in