Across
- 4. Most stars, including our sun, are this type of star
- 7. Shape of our orbit and all planets' orbits
- 8. This can be created from the death of the most massive stars
- 10. The force of attraction between two objects with mass
- 11. This is a rotating neutron star
- 13. This place on the EM spectrum is less energetic than red but more energetic than microwaves
- 15. This place on the EM spectrum has a shorter wavelength than violet but longer than X-rays
- 16. This is the measure of how round or linear an ellipse or orbit is
- 18. This is a star explosion
- 19. A solar system has one star, but a _____ will have billions of stars
- 20. This star is hotter than our sun but dimmer
- 23. The moon and GPS are examples of these
- 24. Besides elliptical and spiral, galaxies are sometimes classified as this shape, especially in the early universe
- 25. When space objects move away from us, they "shift" their spectrums this way
Down
- 1. One of the 'center' points of an ellipse
- 2. How the sun powers itself
- 3. The earth-centered model of the solar system
- 5. Astronomers use "OBAFGKM" to sort stars by this property
- 6. The sun-centered model of the solar system
- 9. The start of our universe
- 12. This is the particle form of light
- 14. The negatively charged particle inside of an atom
- 17. This star is cooler than our sun but brighter
- 21. Space object 100-1000s of km in diameter orbiting in a belt
- 22. Both absorption and emission spectra are also classified as these type of spectra