Astronomy Vocabulary

4. When Earth or the Moon partially blocks light from the Sun.
8. All of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy.
9. An astronomical body that orbits a star, is big enough to have enough gravity to force a spherical shape, and is big enough that its gravity has cleared away any objects of a similar size near its orbit.
10. When Earth or the Moon fully blocks light from the Sun.
11. The outermost part of the Sun’s atmosphere that can be seen during a total solar eclipse.
14. When the view of the Sun from Earth is blocked by the Moon.
17. A huge collection of gas, dust, and billions of stars and their solar systems held together by gravity.
18. Regular repeating path that one object in space takes around another
19. path of an object around a particular point in space:

1. A large region in the solar system past Neptune where Pluto and other dwarf planets orbit the Sun along with rocks, dust, and ice.
2. An imaginary line passing through the center of Earth, around which the planet rotates.
3. Objects orbital motion around another object: Example: Earth revolves around the sun or satellites revolve around planets
5. The envelope of gases surrounding Earth or another planet.
6. The orbital region around a star in which an Earth-like planet can possess liquid water on its surface and possibly support life.
7. An attractive force between two masses by which a planet or other body draws objects toward its center.
12. Earth is tilting and rotating to create day and night
13. When the Moon moves into Earth’s shadow.
15. The path Earth takes as it moves around the Sun.
16. A gravitationally bound system consisting of a sun and the objects that orbit it.