Astronomy Crossword

4. discovered Trans-Neptunian Objects (TNOs) also known as dwarf planets
6. discovered infrared radiation and the planet Uranus
9. discovered the theory of supernova and dark matter
12. discovered Pluto in the 1930s
14. Greek astronomer that used the sun to measure the size of the round Earth
15. woman who discovered pulsars which emit a bean of electromagnetic radiation
17. provided an explanation for Saturn’s rings and discovered its moon, Titan
18. German scientist who was the first astronomer to discover Neptune
20. discovered 4 moons of Saturn: Lapetus, Dione, Rhea and Tethys
22. discovered a huge spherical cloud of icy comets named after him
23. famous for his work on forces, specifically gravity

1. made discoveries of galaxies including Andromeda Nebula and has a telescope named after him
2. Revised the geocentric model of the universe to include epicycles
3. along with Ejnar Hertzsprung, invented a diagram to classify stars
5. discovered a belt of comets at the edge of Pluto’s orbit named after him
7. Greek astronomer that made the first catalogue of the stars, mapping over 850 stars
8. Belgian Catholic priest who is credited with developing the Big Bang Theory
10. proposed the first model of the universe that put the sun at the center
11. pioneer of radio astronomy and was first to discover radio waves emitting from space
13. discovered the orbit of a comet that could be seen from earth every 76 years
15. Danish astronomer who used mathematical equations to figure out the distance to the planets
16. Tycho Brahe’s assistant and calculated three laws of planetary motion
19. discovered the largest asteroid Ceres
21. started the SETI program and created the original TV series Cosmos in the 1980s