Astronomy Crossword
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
 
 
Down: 1) total solar eclipse, partial solar eclipse, annular eclipse3) an imaginary half circle stretching from the horizon due south, through the zenith, to the horizon due north5) the point directly overhead7) spurred by the new ideas introduced by the Polish scientist, eventually overturned the Earth-centered model8) when our universe's expansion began9) when the Sun, Earth and Moon fall into a straight line10) the Earth's average orbital distance (150 kilometers)11) total lunar eclipse, partial lunar eclipse, penumbral lunar eclipse12) The effect whereby the position or direction of an object appears to differ when viewed from different positions13) the boundary between the Earth and the sky14) when the Moon lies directly between the Sun and Earth, so the Moon's shadow falls on Earth16) the degrees from which a plane is tilted relative to an ecliptic plane19) the distance that light can travel in one year (about 10 trillion kilometers)22) a gradual wobble that alters the orientation of Earth's axis in space23) geocentric, attempts to explain retrograde motion with a loop-on-loop setup24) the Earth's orbital path, a defined flat plane Across: 2) consists of the Sun and all the objects that orbit it4) the angle as it appears to span in your field of view6) we always see the same phase of the moon, because Earth's gravity forces the same side of the moon to show9) the path the Sun follows as it appears to circle around the celestial sphere once each year10) where it appears that the planets are moving backwards (west to east)15) great island of stars in space17) the galaxy cluster and superclusters all together18) places Earth at the center of the universe20) the Earth's yearly revolution21) a sort of "skin" of stars wrapping around Earth25) the Earth's daily spin26) when Earth lies directly between the Sun and the Moon27) the process in which lightweight atomic nuclei smash together and stick to make heavier nuclei28) another word for azimuth29) the sky as seen from wherever you happen to be standing30) groups of galaxies with more than a few dozen members31) the planets move in this shape32) projection of the Earth's equator into space33) a star whose complete circle lies above our horizon34) how high a star is in the sky relative to the horizon35) the different appearances and rising times of the moon over its cycle36) clusters of galaxy clusters
 

 

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