Astronomy Crossword

3. discovered a huge spherical cloud of icy comets named after him
5. started the SETI program and created the original TV series Cosmos in the 1980s
7. discovered Trans-Neptunian Objects (TNOs) also known as dwarf planets
8. Greek philosopher that created the first model that put the Earth at the center
10. along with Ejnar Hertzsprung, invented a diagram to classify stars
11. created the first astronomical catalog in 1771 that contained 110 objects
12. Greek astronomer that made the first catalogue of the stars, mapping over 850 stars
14. discovered a belt of comets at the edge of Pluto’s orbit named after him
16. Belgian Catholic priest who is credited with developing the Big Bang Theory
18. woman who discovered pulsars which emit a bean of electromagnetic radiation
19. discovered the orbit of a comet that could be seen from earth every 76 years
20. discovered infrared radiation and the planet Uranus
22. discovered the theory of supernova and dark matter
23. pioneer of radio astronomy and was first to discover radio waves emitting from space

1. discovered the largest asteroid Ceres
2. discovered the four main moons of Jupiter and helped invent the first telescope
4. discovered Pluto in the 1930s
6. Greek astronomer that used the sun to measure the size of the round Earth
9. Danish astronomer who used mathematical equations to figure out the distance to the planets
13. made discoveries of galaxies including Andromeda Nebula and has a telescope named after him
15. German scientist who was the first astronomer to discover Neptune
16. woman who discovered that a star know as a Cepheid could be used as a marker for distance
17. discovered 4 moons of Saturn: Lapetus, Dione, Rhea and Tethys
21. modern physicist who studies quantum mechanics and wrote the book A Brief History of Time