S3 Exoplanet Crossword

This printable crossword puzzle on the topic of Astronomy & Space has 13 clues. Answers range from 3 to 14 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

The apparent change in the frequency of a wave between the source and an observer
When a planet moves in front of a star
Unit of power
Space telescope
Nearest star to us
The distance light will travel in a year
What the universe is doing
Change in frequency when a star or galaxy is moving away from an observer
Visible light colour with longest wavelength
Visible light colour with shortest wavelength
Astronomer who gave his name to the laws of planetary motion
The equation informing us of the possibility of intelligent extra-terrestrial life
Another word for 'brightness'