Alphabetical Order - Topic: Astronomy Circle the word that comes first in alphabetical order. Draw an X through the one that comes last in alphabetical order. 1) gravity space orbit star crater 2) Neptune Saturn astronaut Jupiter asteroid 3) comet mass light Moon cosmic 4) spectrum nebula planet force Pluto 5) photon galaxy radiation vacuum universe 6) Earth rocket supernova equator Sun 7) stellar physics energy fusion eclipse 8) solar satellite meteor telescope meteorite 9) velocity x-ray Venus zenith wave 10) Orion matter NASA Mercury magnetic ClayMaze.com Books & Learning Resources Printable Activities & Worksheets © ClayMaze LLC