Astronomy Crossword

3. A scientific name for the "shooting star".
4. Meteorite, whose composition is similar to the Earth's basalt material, belongs to the ___ type.
6. When a thin ring of the sun is visible around the moon's silhouette, it is a/an ___ eclipse.
11. A type of nucleus that has one proton and one neutron.
13. Jupiter's clouds appear so bright because of this element.
15. The escaping dust and gas from the comet.
16. Another name for solar prominences.
18. The edge of the solar system is the ___ Cloud.
19. An extremely hot matter that produces ionized gas.
20. When the gravity pulling inward is balanced with the pressure that is being pushed out, it is called a gravitational...

1. Only Uranus and Venus have this type of rotation.
2. The oldest type of meteorite, which may be as old as 4.6 billion years old.
5. The time of the solar cycle, during which the solar weather is most active.
7. Among all of the inner terrestrial planets, this one has the densest atmosphere.
8. The belt is similar to the asteroid belt between Mars and Jupiter.
9. A type of nebula that was created by the Big Bang, which later would form the solar system.
10. The lowest layer of the sun's atmosphere
12. If this type of field is wound together, a sunspot may appear.
14. To determine the mass of an asteroid, the scientists measure its ___ effect.
17. The process during which the atom's nucleus splits into smaller parts.