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Space Exploration

Space Exploration. By: Jayden & Sam. Satellites. Satellites are anything that are put in orbit by humans There are many types of satellites. Some satellites have different types of orbits than other satellites. Satellites (cont.). History

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Space Exploration

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  1. Space Exploration By: Jayden & Sam

  2. Satellites • Satellites are anything that are put in orbit by humans • There are many types of satellites. • Some satellites have different types of orbits than other satellites.

  3. Satellites (cont.) History • Konstantin Tsiolkovsky published Means of Reaction Devices, which is the first book written on the use of rockets to launch a spacecraft in 1903. • He said that a multi-stage rocket fueled by liquid hydrogen and liquid oxygen will help complete this task. • The first satellite was the Sputnik I which identified the density of the atmospheric layers.

  4. Satellites (cont.) Types Of Satellites and What They Do • CommunicationSatellites: - satellites used for telecommunications. - they are usually in geosynchronousorbits, so that the satellite dishes can aim at the satellites.

  5. satellites(cont.) Types Of Satellites and What They Do(cont.) • ReconnaissanceSatellites: - observe the earth and are only permitted for military and intelligenceuse. - Very little is known about them.

  6. Satellites (cont.) Types Of Satellites and What They Do(cont.) • Earth Observation Satellites: - used to observe the Earth. • Weather Satellites: - used to predict weather and the climate. Weather Satellite

  7. ENVISAT the biggest Earth Observation Satellite in Space

  8. Satellites (cont.) Types Of Satellites and What They Do(cont.) • AstronomicalSatellites - satellites used for space observation. • Navigational Satellites: - tell mobile receivers on the ground and the person using it their exact location. An Astronomical Satellite Navigational Satellite

  9. Satellite (cont.) Types of Orbits • AltitudeClassification - Low Earth Orbit: orbit at of 0-2000 km high. - Medium Earth Orbit: orbit at 2000-35,786 km high. - High Earth Orbit: orbit at 35,786 km or higher.

  10. Satellites (cont.) Types of Orbits (cont.) • EccentricityClassification - Circular Orbit: an orbit that traces a circle. - Elliptic Orbit: an orbit that traces an ellipse (oval). Circular Orbits An Elliptic Orbit

  11. Satellites(cont.) Types of Orbits (cont.) • SynchronousClassification - Synchronous Orbit: an orbit in which the satellite has an orbital period equal to their rotational period. - Semi-Synchronous Orbit: an orbit in which a satellite has an orbital period equal to half of the rotational period. - Geosynchronous Orbit: an orbit in which the satellite orbits at the speed of Earth’s rotation.

  12. Telescopes • A telescope is anything that helps a person see distant object whether they’re in Space or on Earth. • There are two types of telescope categories: Earth Based & Space Based • Earth Based are split into two: Optical (refracting & reflecting) & Non-Optical.

  13. Telescopes (cont.) Optical Telescopes (refracting)…… • Use lens to gather and focus light making a magnified view. • Contain convex lens.

  14. Telescopes (cont.) Optical Telescopes (reflecting) • Use a series of concave lens to collect light • Have a bigger & brighter view. • The largest ones are the twin Keck telescopes.

  15. Telescopes (cont.) Non-Optical…… • are made to view x-rays, gamma rays and radio waves which are not visible to humans. • Should be sent into space except for radio telescopes.

  16. Telescopes (cont.) Radio Telescopes…… • Are non-optical telescopes • Look like normal TV dishes. • capture radio waves from distant celestial objects & form an image.

  17. Telescope (cont.) Radio Telescopes…… (cont.) • They’re located in remote areas where they can avoid electromagnetic interference from TVs, radios and etc.

  18. Telescopes (cont.) Hubble Space Telescope (HST)…… • Is a 2.4 Aperturetelescope in Low Earth Orbit. • Has been in service for 22 years. • Captures pictures of distant galaxies &stars with almost no background light. • Observes in near infrared, near ultraviolet and visible. • Was Launched on April 24, 1990.

  19. Telescopes (cont.) Hubble Space Telescope (HST)…… (cont.) • is heavy in shear mass weighing at a whopping 24,500 lb. and is 13.2 m long.

  20. Resources • en.wikipedia.org/wiki/International_Space_Station • http://en.wikipedia.org/wiki/Satellite • Library.thinkquest.org • en.wikipedia.org/wiki/Hubble_Space_Telescope • en.wikipedia.org/wiki/Radio_telescope • en.wikipedia.org/wiki/Optical_telescope • Abyss.uoregon.edu • Jaxa.jp • Thecandianencyclopedia.com • Switched.com • Defense-update.com • News.discovery.com • Yusufbozkurt.blogspot.com • Spacetoday.org • BC Science 9 Textbook • www.skyfire.hubpages.com/hub/Optical-Telescope • propaganda-dimitrios.blogspot.com

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