This printable crossword puzzle on the topic of Astronomy & Space has 10 clues. Answers range from 6 to 14 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
round oval shape, mainly old stars
pinwheeled shaped, young and old stars
used to show brightness and temperature
brightness
used to look at the stars
an electromagnetic wave
how much its repeated
empty, nothing there
distance between a wave
unchanging