Astronomy Final

2. Sunspots, flares, prominences, and coronal mass ejections are all caused by ___ activity
3. Home planet
4. Largest asteroid in the solar system
6. Backwards motion, westward loop traced out by a planet with respect to the fixed stars
8. These kind of stars rotate around each other
12. The _____ sphere surrounding the fixed earth, to which all objects in the sky are attached
18. Nearest Major galaxy to the milky way
19. Neptune's largest moon

1. What kind of planets are Earth, Mercury, Venus and Mars
5. The evolution of a star is primarily determined by its
7. Waves produced by accelerating charged particles . Propagation of oscillation of couples electric and magnetic fields
9. Pulsating variable stars are found in the ___ strip of the H–R diagram
10. The charge of an antiproton
11. the apparent displacement of an object because of a change in the observer's point of view
13. The neutral hydrogen atom consists of one proton and one ___
14. The difference in climate between Venus, Earth, and Mars is primarily caused by the thickness in their
15. We know dark matter exist due to a galaxies seemingly invisible ___
16. An increase in the wavelength, and corresponding decrease in the frequency and photon energy, of electromagnetic radiation
17. Disturbance that transfers energy from one place to another. Produced by accelerating charged particles . Propagation of oscillation of couples electric and magnetic fields