4.
celestial mass of rock, dust, gas, & ice
5.
celestial mass of rock, gas, & dust
6.
same as asteroid but smaller
7.
mass from space striking atmosphere
8.
mass from space hitting surface
9.
pathway of smaller mass around larger mass
10.
Sun-based solar system model
11.
Earth-based solar system model
12.
force of attraction between masses
13.
field of comets & debris past Neptune
14.
field of debris between Mars & Jupiter
