cross word vocabulary

This printable crossword puzzle on the topic of Astronomy & Space has 15 clues. Answers range from 4 to 25 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

a star whose brightness changes either irregular or regularly
periodic variable stars
stars are intrinsic variables which pulsate in a predicatable
a circle of white or colored light around the sun moon or other luminous body
streaming motions in molecular gas coincident with the dust lanes
a cluster of galaxies which themselves occur as clusters
the unit of measurement used to describe the expansion of the universe
a galaxy emitting radiation in the radio frequency range of the electromagnetic specrum
a compact region at the center of a galaxy
a massive and extremely remote celestial object
the science of the origin and development of the universe
a theory in astronomy
the universe is assumed to have average properties that are constant in space and time
left over from an early stage of the universe in big bang cosmology
a period early in the big bang during which the universal expansion proceeded at a much more rapid rate that it did before or since