Space Vocab. 1

7. An eclipse in which the moon appears darkened as it passes into the earth's shadow.
8. A small body of matter from outer space that enters the earth's atmosphere, appearing as a streak of light
10. An eclipse in which the sun is obscured by the moon.
13. The path that an object follows as it revolves around another object in space.
14. A celestial object consisting of a luminous spheroid of plasma held together by its own gravity.
16. The shape of the illuminated portion of the moon or a planet as seen from earth.
18. A small rocky body orbiting the sun, usually found in the asteroid belt between Mars and Jupiter.

1. All of space and everything in it.
2. The alternate rising and falling of the sea, usually twice in each lunar day at a particular place, due to the attraction of the moon and sun.
3. A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
4. The phase of the moon in which its whole disk is illuminated.
5. The shape of the illuminated portion of the moon or a planet that is less than half but more than a quarter.
6. The phase of the moon when it is in conjunction with the sun and not visible from earth.
9. The force that attracts a body toward the center of the earth, or toward any other physical body having mass.
11. The shape of the illuminated portion of the moon or a planet that is greater than half but less than fully illuminated.
12. A celestial object consisting of a nucleus of ice and dust, which is surrounded by a coma (a fuzzy atmosphere) and one or more tails.
14. The sun together with all the planets and other bodies that revolve around it.
15. The moon is said to be waning during the period between a full moon and a new moon.
16. A celestial body that orbits the sun, is spherical in shape, and has cleared its orbit of other debris.
17. The moon is said to be waxing during the period between a new moon and a full moon.