Astronomy Crossword Puzzle

This printable crossword puzzle on the topic of Astronomy & Space has 10 clues. Answers range from 4 to 12 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

rediscovered Aristarchus's heliocentric model p. 39
regarded as the father of experimental science p. 41
explained the motions of the planets p. 44
a flattened circle p. 45
came up with the 3 basic laws of motion p.49
measure of an objects inertia p.50
motion in a straight line with constant speed p. 50
the "average" position of all the matter making up both the Sun and the planet p. 53
the tendency of an object to keep moving at the same speed and in the same direction unless acted upon by a force p. 50
the acronym for radio detection and ranging p. 48