Astronomy Crossword

1. German scientist who was the first astronomer to discover Neptune
3. Tycho Brahe’s assistant and calculated three laws of planetary motion
6. Belgian Catholic priest who is credited with developing the Big Bang Theory
7. provided an explanation for Saturn’s rings and discovered its moon, Titan
9. discovered a belt of comets at the edge of Pluto’s orbit named after him
10. Revised the geocentric model of the universe to include epicycles
12. Greek astronomer that used the sun to measure the size of the round Earth
14. made discoveries of galaxies including Andromeda Nebula and has a telescope named after him
16. pioneer of radio astronomy and was first to discover radio waves emitting from space
17. woman who discovered that a star know as a Cepheid could be used as a marker for distance
18. discovered a huge spherical cloud of icy comets named after him
19. started the SETI program and created the original TV series Cosmos in the 1980s
21. Danish astronomer who used mathematical equations to figure out the distance to the planets
22. created the first astronomical catalog in 1771 that contained 110 objects

1. discovered the four main moons of Jupiter and helped invent the first telescope
2. proposed the first model of the universe that put the sun at the center
4. Greek philosopher that created the first model that put the Earth at the center
5. discovered the theory of supernova and dark matter
8. discovered infrared radiation and the planet Uranus
11. modern physicist who studies quantum mechanics and wrote the book A Brief History of Time
13. famous for his work on forces, specifically gravity
15. discovered 4 moons of Saturn: Lapetus, Dione, Rhea and Tethys
20. woman who discovered pulsars which emit a bean of electromagnetic radiation
21. discovered Trans-Neptunian Objects (TNOs) also known as dwarf planets