Space Crossword Puzzle

the initial explosion that resulted in the formation and expansion of the universe
a huge group of single stars, star system, star clusters, dust, and gas bound together by gravity
collection of eight planets and their moon that orbit around the sun
a model of the solar system in which earth and the other planets revolve around the sun.
a model of the universe in which earth is at the center of the revolving planets and stars
galaxy in which we live. contains billions of stars including the sun.
a force that moves rocks and other materials downhill; the force that pulls objects toward eachother
the tendency of an object to resist a change in motion
a loose collection of ice,dust, and small rocky particels, typically with a long narrow orbit of the sun
a chunk of rock or dust in space
a streak of light in the sky produced by the burning of a Meteoroid in earths atmosphere
rocky objects revolving around the sun that are too small and numerous to be considered planets