The Sun's Nearest Stellar Neighbor Crossword

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

related; relatives; close relationship
the closest star to our solar system; is a little cooler than our Sun
a planet revolving around a star that is outside of our solar system
similar to Earth
tough; hard
someone studying the basis of astronomy
a group of stars forming a picture in the night sky
in between stars
National Aeronautics and Space Administration
the path of a planet around its star
the protective layer of earth located in the stratosphere
the rays of the Sun give this off; can be harmful to us
abbreviation of search of extraterrestrial life
a light-collecting instrument that makes distant objects appear nearer through the use of lenses
type of radiation similar to gamma rays, but of somewhat lower energy