This printable word search puzzle contains 20 hidden words in a 17x17 letter grid. Words go horizontally, vertically, and backwards. This word search is also available to download as a Microsoft Word document or a PDF.
Andromeda galaxy
Big Bang theory
Summer solstice
Winter solstice
Cyclic manner
Lunar eclipse
Moon’s motion
Solar eclipse
Eccentricity
Heliocentric
Retrograde
Geocentric
Revolution
Asteroids
Celestial
Solar day
Sun dial
Rotation
Noon
Arc