Astronomy Crossword
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
 
 
Down: 1) I was a Greek astronomer and mathematician. I proposed heIiocentric but it was not accepted. I solved the parallax problem.2) Planetary orbits are ellipses with the sun at one focus.4) Heliocentric. I was an Italian mathematician, physicist, and astronomer. I used the scientific method.5) As the distance between 2 objects increases, the force of gravity _________.6) Planetismials form (small body from which a planet originated. (which step?)8) When looking at 3 different stars, which one would have the greatest parallax?12) What is NH3?21) The pull of gravity on atoms, planets, and stars makes everything ________.22) Heliocentric and elliptical. I was a German mathematician and astronomer. I am responsible for the 3 laws of planetary motion.23) Heliocentric. I was a Danish astronomer. I measured the motion of planets.24) What is the density of water? Across: 3) Located between Mars and Jupiter.7) Geocentric. I was a Greek philosopher and thought the earth wasn't moving.9) Geocentric. I was a Greek-Roman astronomer, geographer, and mathematician. 10) On which planet is a day longer than a year?11) What is CH4?13) Distance of a planet from the sun to the time it takes to revolve is related.14) Because it is made up of gases and it is not a solid, the sun has __________________.15) Comets can be found here.16) Heliocentric. I was a Polish astronomer. I am responsible for the order of the planets today.17) Planets form. (which step?)18) What 2 planets have retrograde rotation?19) Sun forms in center. (which step?)20) Located beyond Neptune and contains small bodies of ice.23) Gravity causes solar nebula to collapse toward dense, hot, rotating protostellar disk. (which step?)25) Planets move faster when closer to the sun.
 

 

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