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The Eye of Our Universe PowerPoint PPT Presentation

The Eye of Our Universe The Whirlpool Galaxy, starburst type. NASA and the Space Telescope Science Institute. 2005. unitedstreaming. 2 November 2005 <http://www.unitedstreaming.com/> Marianne Scott Calloway County Middle School Video Clip Key Terms

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The Eye of Our Universe

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The eye of our universe l.jpg

The Eye of Our Universe

The Whirlpool Galaxy, starburst type. NASA and the Space Telescope Science Institute. 2005. unitedstreaming. 2 November 2005 <http://www.unitedstreaming.com/>

Marianne Scott

Calloway County Middle School


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Video Clip


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Key Terms

  • Astronomy- the study of all physical objects beyond Earth

  • Galaxy- a large grouping of stars in space

  • Constellation- a section of the sky that contains a recognizable star pattern

  • Nebula- a large cloud of dust and gas in interstellar space; the location of star formation


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More Key Terms….

  • Telescope- an instrument that collects electromagnetic radiation from the sky and concentrates it for better observation.

  • Astronomical Unit- the average distance between the Earth and the sun.

  • Light year- a unit of length equal to the distance light travels in space in 1 year

  • Satellite- a natural or artificial body that revolves around a planet


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Hubble Telescope Facts

  • The Hubble Space Telescope was named after Edwin Hubble (1889-1953), an astronomer whose contributions to astronomy include a classification system for galaxies.

  • The Hubble Telescope orbits the Earth 370 miles above the Earth’s rippling atmosphere at 5 miles a second. It orbits the globe every 97 minutes.

  • Hubble is roughly the size of a large school bus.

  • It was launched into orbit on the space shuttle, Discovery, on April 1990


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More Hubble Facts

  • Scientists decided to put the Hubble in space to eliminate distortions to images caused by turbulence in the Earth’s atmosphere.

  • Hubble pictures require no film. The telescope takes digital images, which are transmitted to scientists on Earth.


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Hubble finds many bright clouds on Uranus

  • A Hubble telescope infrared view of Uranus reveals that the planet is surrounded by its four major rings and by 10 of its 17 known satellites.

  • Hubble recently found about 20 clouds — nearly as many clouds on Uranus as the previous total in the history of modern observations. The orange-colored clouds near the prominent bright band circle the planet at more than 300 mph (500 km/h). One of the clouds on the right-hand side is brighter than any other cloud ever seen on Uranus.

  • Credit: Erich Karkoschka (University of Arizona) and NASA


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Saturn

  • Object Description:Planet

  • Distance:The semi-major axis of Saturn's orbit about the sun is 9.5 Astronomical Units (A.U.) or roughly 1.4 billion km.

  • Dimensions:The planet (without rings) has a diameter of roughly 75,000 miles (120,000 km) at the equator.

  • Exposure Dates:Oct 1996, Oct 1997, Oct 1998, Nov 1999, Nov 2000


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Cat’s Eye Nebula

  • As if the Cat's Eye itself isn't spectacular enough, this new image taken with Hubble's Advanced Camera for Surveys (ACS) reveals the full beauty of a bull's eye pattern of eleven or even more concentric rings, or shells, around the Cat's Eye. Each 'ring' is actually the edge of a spherical bubble seen projected onto the sky -- that's why it appears bright along its outer edge

  • http://heritage.stsci.edu/gallery/gallery.html


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Edge-On Galaxy

  • Object Name:NGC 4013

  • Object Description:Edge-on Spiral Galaxy

  • Constellation:Ursa Major

  • Distance:About 17 Mpc (55 million light-years)  

  • Dimensions:The visible portion of the galaxy is 10.7 kpc (35,000 light-years) along its length.

  • http://heritage.stsci.edu/gallery/gallery.html


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What do you think?

  • Scientists used to think that our Milky Way galaxy was the entire universe. Hubble made a significant jump in our understanding the solar system and beyond.

  • Defend this position. Describe what impact Hubble’s discoveries have made for modern astronomy.


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The End


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