Stellar Life Crossword

This printable crossword puzzle on the topic of Astronomy & Space has 18 clues. Answers range from 7 to 20 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

the law that states that mass in must equal mass out
law that states that energy in must equal energy out
lower edge of the main sequence
gas that is so dense that electrons cannot change energy levels
helium fusion beginning with an explosion
the combination of three helium nuclei
any star that changes brightness in a periodic way
internal characteristics that change size, temperature and luminosity
collection of less than 1000 stars that is transparent
a multitude of stars that form a spherical shape
the limit where stars move off the main sequence
star that does not ignite helium fusion
eruptions in the helium fusion shell
smaller cooler stars that could live over 10 times longer than our sun
ionized gases expelled by a dying star
a white dwarf is not a star.. it is this
whirling disk of gas
explosion of super giant