astronomy!
DESCRIPTION
Astronomy!. Emily Cunningham Institut d’Astrophysique de Paris. What do astronomers study?. 1. Planets. 2. Stars. SUPERNOVA! (NASA). BLACK HOLE!. Image: NASA. 3. Galaxies. Andromeda Galaxy (M31). Image: NASA. 4. Clusters of Galaxies. Abell Cluster of Galaxies. Image: NASA. - PowerPoint PPT PresentationTRANSCRIPT
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Astronomy!Astronomy!
Emily Cunningham
Institut d’Astrophysique de Paris
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What do astronomers study?What do astronomers study?
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1. Planets1. Planets
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2. Stars2. Stars
Image: NASA
BLACK HOLE!SUPERNOVA! (NASA)
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3. Galaxies3. Galaxies
Andromeda Galaxy (M31). Image: NASA
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4. Clusters of Galaxies4. Clusters of Galaxies
Abell Cluster of Galaxies. Image: NASA
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5. The Universe: Cosmology5. The Universe: Cosmology
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How do astronomers study the How do astronomers study the universe?universe?
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How do astronomers study?How do astronomers study?
1. Observations: Telescopes
2. Theory: Computer Simulations and Models
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ObservationsObservations
1. Ground-Based
Kitt Peak National Observatory, Arizona, United States
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ObservationsObservations
1. Ground-Based
Keck Telescopes: Mauna Kea, Hawaii, United States
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ObservationsObservations
2. Space-Based
Hubble Space Telescope (HST)
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Thierry Cohen, www.newyorktimes.com
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Thierry Cohen, www.newyorktimes.com
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2. Theory: Computer Simulations!2. Theory: Computer Simulations!
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The Speed of LightThe Speed of Light
Speed of light: c = 3.00 x 108 m/s Because light has a finite speed, the light
that reaches us from distant objects was emitted many (i.e. millions or billions) years ago
This means, in astronomy, looking far away is the same as looking back in time!
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Night vision goggles can see infrared!
X-rays pass through your skin but not your bones!
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Pinwheel Galaxy: Visible Light (Hubble Space Telescope)
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Pinwheel Galaxy: Infrared (Spitzer Space Telescope)
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Pinwheel Galaxy: X-Rays (Chandra X-Ray Observatory)
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Pinwheel Galaxy: Infrared + Visible + X-ray
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Elliptical GalaxiesElliptical Galaxies
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Image: Hubble Space Telescope
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Image: Hubble Space Telescope