Is27 Crossword
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
 
 
Down: 1) a body composed of ice and dust that orbits the Sun, usually in a very eccentric orbit, and that casts a luminous tail when it is close to the Sun2) the major bodies orbiting the Sun or other star, which are massive enough for their gravity to make them spherical but small enough to avoid having nuclear fusion in their cores3) Jupiter, Saturn, Uranus, and Neptune8) the plane of Earth's orbit9) a small, rocky, planetlike fragment that orbits the Sun.10) the phase of the moon when its sunlit side is the side facing Earth11) a small piece of debris from a comet or asteroid in interplanetary space13) the disk-shaped region of the sky beyond Neptune that is populated by many icy bodies and is a source of short-period comets14) the phase of the Moon when darkness covers the side facing Earth Across: 4) the region beyond the Kuiper Belt that is populated by trillions of icy bodies and is a source of long-period comets5) the cycles of change of the "face" of the Moon, changing from new, to waxing, to full, to waning, and back to new6) the planets close to the Sun: Mercury, Venus, Earth, and Mars7) the phenomenon whereby the shadow of the Moon falls upon Earth, producing a region of darkness in the daytime12) a meteoroid, or a part of a meteoroid, that has survived passage through Earth's atmosphere to reach the ground15) the phenomenon whereby the shadow of the Earth falls upon the Moon, producing the relative darkness of the full Moon16) the streak of light produced by a meteoroid burning in Earth's atmosphere; a "shooting star"17) the idea that the Sun and planets formed together from a cloud of gas and dust, a nebula
 

 

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