Name: ______Astro: ______Date: ______

History of Astronomy Online Scavenger Hunt

Directions: Using the internet, search for the person and date for each discovery.

1. I was the first person to use a telescope to look at the heavens. Who am I? Galileo

2. We discovered the relationship between a star’s temperature and it’s brightness. Who are we? Ejnar Hertzsprung and Henry Norris Russell

3. I was the first person to fly in space. Who am I? Yuri Gagarin

4. I was a female British astronomer who helped discover pulsars. Who am I? Jocelyn Bell Burnell

5. I was the first person to walk on the moon. Who am I? Neil Armstrong

6. I developed the big bang theory. Who am I? Georges Lemaitre

7. I was the first person to accurately estimate the size of the Earth. Who am I? Eratosthenes

8. I was the first person to propose that the planets go around the sun. Who am I? Aristarchus

9. I rediscovered the heliocentric model of the solar system in the middle ages. Who am I? Nicolas Copernicus

10. I discovered four moons of Saturn. Who am I? Giovanni Cassini

11. I worked very closely with my brother and discovered 8 comets and developed a catalog of the nebulae and clusters that we both identified. Who am I? Caroline Herschel

12. I am regarded as the greatest observer of the pre-telescopic era. I made precise measurements of the solar system and over 600 stars. Who am I? Tycho Brahe

13. I discovered the planet Uranus using a self built reflecting telescope. Who am I? William Herschel

14. I developed the theory of gravity and explained how gravity keeps planets in orbit around the sun. Who am I? Isaac Newton

15. I proved some comets were period when I predicted the return of a comet in 76 yrs, which was eventually named after me. Who am I? Edmund Halley

16. I was able to calculate the relative sizes and distances of Earth, Moon and Sun. Who am I? Aristarchus

17. I am the president who launched the Apollo lunar exploration program. Who am I? John F. Kennedy

18. We discovered Neptune together. Who are we? Johann Gottfried Galle and Louis d’Arrest

19. I developed theories of relativity that explain the evolution of the expanding Universe. Who am I? Albert Einstein

20. I named stars by assigning them to constellations and giving them Greek letters. Who am I? Johann Bayer

21. I studied planetary motion and published Almagest. Who am I? Ptolemy

22. I discovered the first active galaxy. Who am I? Carl Seyfert

23. I study physics and predicted that black holes emit radiation. Who am I? Stephen Hawking

24. I developed the laws of planetary motion and realized the orbits were elliptical. Who am I? Johannes Kepler

25. I showed that other galaxies existed and observed that the universe is expanding because the other galaxies are all moving away from the Milky Way. Who am I? Edwin Hubble

26. I made and launched the world’s first liquid fueled rocket. Who am I? Robert Goddard

27. I was the first American in space. Who am I? Alan Shepard

27. I proposed the existence of a disk-shaped region of minor planets outside the orbit of Neptune. It is now named after me. Who am I? Gerald Kuiper