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einstein's theory predicted that gravity would bend starlight as it passed by the sun.
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the scientist needed a total solar eclipse to see the stars near the sun
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Dr. shapley used observations of globular star clusters made with the 60 inch telescope at the mount wilson observatory
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age:2billion size:280million light years
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andromeda was 9000,000 light years away, proving that it lies outside the milky way
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Dr. Hubble took photos of "spyral nebulae" with the hooker telescope
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those nebulae showed induvidual cephid including cephid variable stars.
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type 1: brighter and bluer type 2: redr and fainter
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age: 6billion size: 4.2billion light years
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The Big Bang Theory
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Walter baade used the hooker telescope at the mount wilson observatory to take photos of andromeda
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Age:10-25billion years Size: 25billion light years
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arno penzias and robert witson were trying to track down unwanted signals that were detecting with the 20-foot hornantenna in holmdel, new jersey.
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they studied the shift of the stars
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radiation was coming from the hot dense ball of matter and energy that exist at the beggining of the universe
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age: 12-20billion size: 30billion light years
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the universe started as a dense ball of energy that began to expand, distributing hot radiation and space outward in all direction
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without dark matter ,the gas would qickly disapate
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the universe underwent a very rapid expansion in a very short amount of time causing the cosmic microwave background radiation
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age:13.7billion size; 94billion light years
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the universe is made up of 73% dark energy 23% dark matter and 4% atoms
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a NASA scientist who won the nobel prize in 2006 for discoveries about the cosmic microwave background
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Cosmic Microwave Background
