Across
- 3. Nuclear reaction that forms helium from hydrogen
- 7. Heaviest element formed in a supernova
- 11. A near spherical body that orbits a star
- 12. Largest planet in our solar system
- 13. Element that contains only 1 proton in its nucleus
- 15. The surface temperature of a star determines its ....
- 16. The further away a galaxy is the faster it is moving away from us. What does this suggest the Universe is doing?
- 19. CMBR can be detected in all directions and is left over from the Big Bang. What does the "M" stand for
- 21. A star is this it the inward gravitational forces are balance by the outward forces due to nuclear fusion
- 23. Spherical ball made mostly of hydrogen that will eventually become a main sequence star
- 24. A star much bigger than our sun will become a red _ _ _ _ _ _ _ _ _ _
- 25. A natural satellite that orbits a planet
- 26. The Milky Way is the name of the _ _ _ _ _ _ that our solar system is in.
Down
- 1. After the main sequence stage of our sun's life it will become a red _ _ _ _ _
- 2. Force that keeps an object in a circular orbit
- 4. A _ _ _ _ _ _ _ star is a very dense core remnant left over after a supernova
- 5. Huge explosion of a red supergiant
- 6. A white _ _ _ _ _ is formed as a red giant collapses
- 8. Increase in received wavelength of light caused by the light emitter (star) and receiver (you) moving apart
- 9. Produced by the fusion of hydrogen in a star's core
- 10. Our sun is about 5 _ _ _ _ _ _ _ years old
- 14. Effect where there is a change in pitch as a sound source moves towards or away from you
- 17. Heaviest element formed by nuclear fusion in a star's core
- 18. Force that pulls masses together
- 20. A spectrum which has dark lines which are specific to different electron transitions in elements
- 22. If light from a galaxy has a bigger red-shift it is moving _ _ _ _ _ _ away from you