Across
- 5. a band on the Hertzsprung-Russell diagram where most stars, including our Sun, reside during their most stable phase of life
- 7. exceptionally large, bright, and massive stars that are in the later stages of their evolution, often nearing the end of their lives
- 8. the total amount of energy an object emits per unit of time, often measured in watts
- 9. a graph that plots the temperature and luminosity of stars, revealing their stellar evolution stages
- 10. encompasses everything – all of space and time, including all matter and energy within it, and even time itself
Down
- 1. the process where two or more atomic nuclei combine to form a heavier nucleus, releasing energy in the process
- 2. a system astronomers use to classify stars based on their temperature and the types of spectral lines they emit
- 3. Giant stars are stars that have evolved beyond their main sequence stage, expanding significantly in size and luminosity
- 4. vast, diffuse clouds of gas and dust in space, often serving as nurseries for new stars
- 6. a process where atomic nuclei collide and interact, either fusing together or splitting apart, resulting in new nuclei and the release or absorption of energy