Astronomy Crossword
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
 
 
Down: 1) an apparent shift in the position of an object when viewed from different locations2) the location on the H-R diagram where most stars lie; it has a diagonal pattern from the lower right (low temperature and luminosity) to the upper left (high temperature and luminosity)5) a small, rocky object that orbits the sun; most asteroids are located in a band between the orbits of Mars and Jupiter6) quasi-stellar radio source; a very luminous object that produces energy at a high rate; quasars are thought to be the most distant objects in the universe9) a tight group of stars that looks like a ball and contains up to 1 million stars11) a meteoroid that reaches Earth's surface without burning up completely13) the region of the solar system that is between the orbits of Mars and Jupiter and in which most asteroids orbit14) an imaginary point in the sky directly above an observer on Earth 16) the line where the sky and earth appear and meet17) an object so massive and dense that even light cannot escape its gravity18) the first human to set foot on a world other than Earth21) the angle between an object and the horizon Across: 1) the change in the sunlit area of one celestial body as seen from another celestial body3) a small, hot, dim star that is the leftover center of an old star4) the first human to orbit Earth7) a small body of ice, rock, and cosmic dust that follows an elliptical orbit around the sun and that gives off gas and dust in the form of a tail as it passes close to the sun8) a gigantic explosion in which a massive star collapses and throws its outer layers into space10) a rapidly spinning neutron star that emits pulses of radio and optical energy12) the first American to orbit the Earth15) a region of the sky that contains a recognizable star pattern and that is used to describe the location of objects in space19) a bright streak of light that results when a meteoroid burns up in Earth's atmosphere20) a large, reddish star late in its life cycle22) any human-made object placed in orbit around a body in space23) the distance that light travels in one year; about 9.46 trillion kilometers24) a relatively small, rocky body that travels through space25) a natural or artificial body that revolves around a celestial body that is greater in mass26) an event in which the shadow of one celestial body falls on another27) a star that has collapsed under gravity to the point that the electrons and protons have smashed together to form neutrons28) Hertzsprung-Russell diagram, a graph that shows the relationship between a star s surface temperature and absolute magnitude
 

 

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