History of Astronomy

4. discovered a huge spherical cloud of icy comets named after him
6. Greek astronomer that made the first catalogue of the stars, mapping over 850 stars
7. woman who discovered pulsars which emit a bean of electromagnetic radiation
8. Tycho Brahe’s assistant and calculated three laws of planetary motion
9. famous for his worm on forces, specifically gravity
10. discovered 4 moons of Saturn: Lapetus, Dione, Rhea and Tethys
13. Greek astronomer that used the sun to measure the size of the round Earth
16. provided an explanation for Saturn’s rings and discovered its moon, Titan
17. Belgian Catholic priest who is credited with developing the Big Bang Theory
19. discovered the largest asteroid Ceres
21. discovered the four main moons of Jupiter and helped invent the first telescope
22. modern physicist who studies quantum mechanics and wrote the book A Brief History of Time
23. discovered the orbit of a comet that could be seen from earth every 76 years

1. Danish astronomer who used mathematical equations to figure out the distance to the planets
2. proposed the first model of the universe that put the sun at the center
3. created the first astronomical catalog in 1771 that contained 110 objects
5. Greek philosopher that created the first model that put the Earth at the center
7. discovered Trans-Neptunian Objects (TNOs) also known as dwarf planets
11. started the SETI program and created the original TV series Cosmos in the 1980s
12. discovered infrared radiation and the planet Uranus
14. discovered Pluto and the Kuiper belt in the 1930s
15. made discoveries of galaxies including Andromeda Nebula and has a telescope named after him
18. Revised the geocentric model of the universe to include epicycles
20. discovered the theory of supernova and dark matter