This printable crossword puzzle on the topic of Astronomy & Space has 13 clues. Answers range from 6 to 18 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Theory that states everything in the universe was created in a fraction of a second
A nuclear reaction in which the nuclei of certain elements combine to form a larger nucleus
Outdated theory - says the earth is the center of our solar system
Explosion that happens when a Big Star's outler layers collapse in on itself
Occurs when a Small Star's temperature decreases, turning from white to reddish-orange
The cloud of dust and gas after a supernova
The explanation for the formation of our solar system
Large cloud of dust and gas from a RED GIANT
Modern belief that the SUN is the center of our solar system
After a planetary nebula, the hot core of a star remains, called a _____
Man that created the heliocentric model
Added to the Heliocentric Model - said that planet's orbits were elliptical and not circular
Man that discovered gravity