1. The Sun-Earth-Moon System Tools of Astronomy The Moon Sun-Earth-Moon System Chap. 28

2. Objectives Tools of Astronomy – 28.1 • describe electro-magnetic radiation. • explain how telescopes work • describe space exploration http://www.physics.unr.edu/cshirley/images.html

3. Electromagnetic Radiation (light)

4. Electromagnetic Radiation (light) • Only part of the spectrum is visible (ROY G BIV)

5. Electromagnetic Radiation (light) • Only part of the spectrum is visible (ROY G BIV) • Most ‘light’ cannot be seen by the human eye

6. Electromagnetic Radiation (light) • Only part of the spectrum is visible (ROY G BIV) • Most ‘light’ cannot be seen by the human eye • Different light has different wavelengths

7. Electromagnetic Radiation (light) • Only part of the spectrum is visible (ROY G BIV) • Most ‘light’ cannot be seen by the human eye • Different light has different wavelengths • Frequency is related to wavelength The longer the wave the the frequency

8. Electromagnetic Radiation (light) • Only part of the spectrum is visible (ROY G BIV) • Most ‘light’ cannot be seen by the human eye • Different light has different wavelengths • Frequency is related to wavelength The longer the wave the shorter the frequency

9. Telescopes Yerkes observatory (WI), 1897

10. Telescopes • Introduction

11. Telescopes • Introduction • Purpose – to collect light and focus it Globular Star Cluster M15, Milky Way

12. Telescopes • Introduction • Purpose – to collect light and focus it • Telescopes magnify objects This is the secondary function of a telescope

13. Telescopes • Introduction • Types

14. Telescopes • Introduction • Types • Refractor http://www.yesmag.bc.ca/how_work/telescope.html

15. Telescopes • Introduction • Types • Refractor • Uses glass lenses

16. Telescopes • Introduction • Types • Refractor • Uses glass lenses • Often made from two lenses – an objective and an eyepiece http://www.astro-tom.com/telescopes/telescopes.htm

17. Telescopes • Introduction • Types • Reflector http://www.yesmag.bc.ca/how_work/telescope.html

18. Telescopes • Introduction • Types • Reflector • Uses mirrors

19. Telescopes • Introduction • Types • Reflector • Uses mirrors • Light often strikes a series of mirrors http://www.astro-tom.com/telescopes/telescopes.htm

20. Telescopes • Introduction • Types • Reflector • Uses mirrors • Light often strikes a series of mirrors http://www.astro-tom.com/telescopes/telescopes.htm

21. Telescopes • Introduction • Types • Benefits

22. Telescopes • Introduction • Types • Benefits • Can utilize a variety of detectors

23. Telescopes • Introduction • Types • Benefits • Can utilize a variety of detectors • Can focus more light than the eye

24. Telescopes • Introduction • Types • Benefits • Can utilize a variety of detectors • Can focus more light than the eye • Can make time exposure photos http://www.wam.umd.edu/~iblumgar/eclipse.html

25. Telescopes • Location

26. Telescopes • Location • Away from cities

27. Telescopes • Location • Away from cities • On high mountains

28. Griffith Observatory – So. California ~1,100 feet

29. Mt. Wilson Observatory – So. California ~5,600 feet

30. http://www.ucolick.org/~kibrick/ Keck Observatory – Mauna Kea ~14,000 feet

31. Telescopes • Location • Other telescopes • Radio-telescopes collect . http://pics.bothner.com/2002/RadioTelescope/

32. Telescopes • Location • Other telescopes • Radio-telescopes collect radiowaves • Interferometry links multiple ________

33. Telescopes • Location • Other telescopes • Radio-telescopes collect radiowaves • Interferometry links multiple telescopes

34. VLA Radio Antennas – Socorro, NM

35. Collecting data beyond Earth

36. Collecting data beyond Earth • Space telescopes

37. Collecting data beyond Earth • Space telescopes • Spacecraft/probes

38. Collecting data beyond Earth • Space telescopes • Spacecraft/probes • Space station

39. The End

40. Objectives The Moon – 28.2 • describe the develop-ment of exploration of the Moon. • identify features on the Moon. • explain the theories about how the Moon formed.

41. Historic Missions • Sputnik I (1957) The first , launched by .

42. Historic Missions • Sputnik I (1957) The first satellite, launched by Russia

43. Historic Missions • Sputnik I (1957) • Vostok 1 (1961) first man in space, he was from .

44. Historic Missions • Sputnik I (1957) • Vostok 1 (1961) Yuri Gagarin first man in space, he was from Russia.

45. Historic Missions • Sputnik I (1957) • Vostok 1 (1961) • Mercury (1961) was the first American in space.

46. Historic Missions • Sputnik I (1957) • Vostok 1 (1961) • Mercury (1961) Alan Shepard Jr was the first American in space.

48. Historic Missions • Sputnik I (1957) • Vostok 1 (1961) • Mercury (1961) • Gemini (1963-1966) This craft was designed to carry people.

49. Historic Missions • Sputnik I (1957) • Vostok 1 (1961) • Mercury (1961) • Gemini (1963-1966) This craft was designed to carry 2 people.