NASA Eyes on Earth What s up? Satellites Presented by: Christopher Blair

Transcription

1 LIVE INTERACTIVE YOUR DESKTOP NASA Eyes on Earth What s up? Satellites Presented by: Christopher Blair May 23, 2011

2 National Aeronautics and Space Administration NASA s Launch Services Program presents: NASA s Eyes on the Earth Outreach Specialist Christopher Blair christopher.e.blair@nasa.gov

3 National Aeronautics and Space Administration QUESTION 1

4 Which is the correct position for the Sun? A B

5 A

6 B

7 National Aeronautics and Space Administration Know Earth s Orbit is an Ellipse but is drawn almost like a circle Know that the Sun isn t in the exact CENTER of the solar center.

8 National Aeronautics and Space Administration QUESTION 2

9 National Aeronautics and Space Administration Do all planets orbit our Sun at the same speed? Yes X No

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11 Pause for Questions?

12 What are the types of Satellites? Artificial or Natural?

13 Your Title Here 13

14 Your Title Here 14

15 Artificial Satellites

16 TYPES OF SATELLITES

17 Communication Reconaissance Search and Rescue Atmospheric Studies Weather Navigation Space Exploration Astronomy Remote Sensing

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20 HOW DOES A SATELLITE WORK? Your Title Here 20

21 WHAT IS REMOTE SENSING?

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24 Eyjabakkajökull Glacier, Iceland 2000

25 Remote sensing is any technique for measuring, observing or monitoring a process or object without physically touching it. Your Title Here 25

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27 Electromagnetic Spectrum Your Title Here 27

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29 Your Title Here 29

30 Pause for Questions?

31 What is an Orbit? The curved path an object takes around another. Controlled by Gravity & Forward Motion.

32 ORBIT ATTRIBUTES POSITION PERIOD ECCENTRICITY INCLINATION

33 National Aeronautics and Space Administration ORBITAL POSITION APO means AWAY. PERI means NEAR.

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35 ORBITAL PERIOD

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37 ence/physics/mechanics/orbit/perihelion_apheli on.html&edu=high This image and text is [select one: from, based on content from, derivative from content on] Windows to the Universe ( 2010, National Earth Science Teachers Association. This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.

38 ORBITAL ECCENTRICITY CIRCLE or ELLIPSE?

39 ECCENTRICITY How elongated an elliptical orbit is measured by it s eccentricity.

40 40

41 41

42 ORBITAL INCLINATION

43 90 degrees 45 degrees 0 degrees

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46 Your Title Here 46

47 National Aeronautics and Space Administration CREATING AN ORBIT

48 National Aeronautics and Space Administration

49 Pause for Questions?

50 What are the types Of Orbits?

51 LOCATION OF ORBITS Geocentric Lunacentric Heliocentric Areocentric Galactocentric

52 ALTITUDE OF ORBITS LEO MEO Geosynchronous Geostationary Sun Snychronous LaGrange Molniya Orbit HAPs

53 LOW EARTH ORBIT (LEO) Typical Uses: Manned Spacecrafts, Military, Observation

54 PROS 14+ orbits/day Better Signal Strength Higher Fidelity/Resolution Data CONS Limited Earth view Short time over area Limited view of the Earth Expensive Tracking Stations Reacts to gravity, drag, etc.

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59 GEOSATIONARY ORBIT

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61 PROS Large coverage area. Constant view of selected area. 24 hour communication. CONS Doesn t image the poles. Time Delay due to distance. Overcrowding / Traffic.

62 POLAR ORBITS

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65 POLAR PROS a) Sees more of Earth b) Better signal strength. c) Less time delay. CONS a) Orbital Decay from Atmosphere b) No Continual Imagery c) Expensive Tracking Stations

66 LAGRANGE ORBITS 66

67 SOHO Solar Heliospheric Observatory 67

68 LAGRANGE ORBITS 68

69 WMAP 69

70 LAGRANGE ORBITS 70

71 James Webb Space Telescope 71

72 LAGRANGE ORBITS 72

73 STEREO Your Title Here 73

74 LAGRANGE ORBITS 74

75 Your Title Here 75

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77 Thank you to the sponsor of tonight's Web Seminar: This web seminar contains information about programs, products, and services offered by third parties, as well as links to third-party websites. The presence of a listing or such information does not constitute an endorsement by NSTA of a particular company or organization, or its programs, products, or services.

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80 National Science Teachers Association Dr. Francis Q. Eberle, Executive Director Zipporah Miller, Associate Executive Director Conferences and Programs Al Byers, Assistant Executive Director e-learning NSTA Web Seminars Paul Tingler, Director Jeff Layman, Technical Coordinator LIVE INTERACTIVE YOUR DESKTOP