Astronomy Name Match Crossword
                                      
                                      
                                      
                                      
                                      
                                      
                                      
                                      
                                      
                                      
                                      
                                      
                                      
                                      
                                      
                                      
                                      
                                      
                                      
                                      
 
 
Down: 1) Astrophysicist who studied the physical structure of stars and was an expert on Einstein's general theory of relativity.2) Developed three empirical laws of planetary motion that represent a significant revision of the Copernican model.3) Proposed the heliocentric model of the planetary system. He showed how the retrograde motion of planets could be explained.4) Estimated the circumference of the Earth to within 1% accuracy.6) Measured the positions of planets with unprecedented accuracy. Discovered and studied a bright supernova in 1572.7) First to systematically study the heavens with a telescope. Discovered the phases of Venus and the four bright moons of Jupiter. Across: 5) Developed special and general theories of relativity. 8) Measured the Sun-Earth distance relative to the Earth-Moon distance. Reasoned that the Sun is at the center of the Universe.9) Developed an elaborate model for planetary motions based on Aristotle's work. 10) Made the first accurate star catalog. Determined the length of the year to within six minutes.11) Brilliant thinker whose beliefs about physics and astronomy turned out to be wrong. Developed an Earth centered model.
 

 

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