Across
- 2. Rocky bodies that tend to have very elliptical orbits around the Sun.
- 3. A planet with a smaller radius and larger ____ will have a stronger surface gravity.
- 5. Closest planet to the Sun.
- 6. When a planet elliptically orbits a star, the planet's ____ energy is highest at its closest point.
- 8. (2words) Once the Sun ends fusing and loses its outer layers it is left as a...
- 10. (2words) Star during its steady, hydrogen fusing part of its life (like the Sun is now).
- 12. Only certain ____ of light can make it through are atmosphere so some telescopes are in space.
- 14. The furthest planet from the Sun.
- 16. The light appears to be. longer wavelength because it is moving away from us.
- 17. Famous astronomer who discovered cosmological redshift.
- 18. Massive star at the end of its life. Electrons crushed into the protons...
- 19. A celestial body that orbits a planet.
- 20. The hottest planet in the Solar System
- 23. Helps us see the cosmos. MUCH bigger than an eye to capture more light.
- 24. (2words) Theory that the universe originated from an extremely hot, dense point.
- 25. (2words) Our home galaxy name.
Down
- 1. (2words) Theory that the universe has always been and keeps the same average density.
- 4. Giant explosion that happens to the most massive stars when fusion stops (Fe in core).
- 7. (2words) After hydrogen fusing stage, for a star much bigger than the Sun.
- 9. Orbit above the equator where the satelite remains in the same position relative to the ground.
- 11. The acronym for the long wavelength radiation coming from the hot universe after the Big Bang.
- 13. Second most common element in universe. Fused by stars later in their lives.
- 15. Any force causing something to move in a circular path.
- 21. Birth place of stars. Vast cloud of gas.
- 22. A massive, hot ball a plasma. Nuclear fusion happens in the core.