Across
- 2. sequence star, A stable star that fuses hydrogen into helium in its core.
- 5. A powerful explosion marking the death of a massive star.
- 6. The largest planet in our solar system, known for its Great Red Spot and many moons.
- 8. A thin layer of a star's atmosphere just above the photosphere.
- 11. dwarf, The remnant of a small to medium-sized star that has exhausted its nuclear fuel.
- 12. The visible surface of a star, from which light is emitted.
- 13. zone, The region where hot plasma rises and cooler plasma sinks, transporting energy to the star's surface.
- 14. The second planet from the Sun, known for its extreme temperatures and thick atmosphere.
- 16. The closest planet to the Sun, with extreme temperature variations.
- 20. A vast cloud of gas and dust in space, often the birthplace of stars.
- 21. The outermost layer of a star's atmosphere, visible during a solar eclipse.
- 23. The third planet from the Sun, home to diverse life forms and liquid water.
Down
- 1. The fourth planet from the Sun, famous for its red surface and potential for past water.
- 3. The eighth planet from the Sun, known for its deep blue color and strong winds.
- 4. zone, The layer of a star where energy is transferred outward through radiation.
- 7. A young star still in the process of forming from a collapsing nebula.
- 9. diagram, A graph that plots stars based on their luminosity and temperature.
- 10. star, A large, evolved star with a cooler surface and higher luminosity than the Sun.
- 15. A gas giant with a unique tilt, rotating on its side in relation to other planets.
- 17. hole, A region in space where gravity is so strong that not even light can escape.
- 18. nebula, A ring of gas ejected by a dying star during the later stages of its life.
- 19. A gas giant with prominent rings, the sixth planet from the Sun.
- 22. A massive ball of gas that emits light and heat due to nuclear fusion in its core.