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Age infinte size 300,000 light years
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Both Newton and Einstein's theories predicted that gravity would bend starlight as it passed by the sun
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Scientists needed a total eclipse to detect the the bending of starlight around the sun because they needed to see the stars near the sun
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Einstein added the cosmological constant to his equation for Relativity to keep the universe unchangeable
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Dr. Edwin Hubble took a picture of "spiral nebula" with the hooker telescope
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2 billion years old and 280 million light years
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their are three types of galaxies
Spiral
eleptical
irregular -
Edwin Hubble discovered that Andrmeda is 900,000 light years away
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6 billion years old and 4-8 billion light years
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Walter Baade used the hooker telescope at Mount Wilson Observatory to take images of Andromeda
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their are two types of super- novae and they are type 1 and type 2 and the difference between them is whether or or not they have hydrogen
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Type 1 stars are brighter, bluer, and lie in open clusters in Andromeda's disk while Type 2 are redder, fainter and lie in globular clusters.
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10-25 billion years old and 25 billion light years
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Emile le Rez, Andre Dorschkevic, and Edward Ohm all missed the cosmic backround radiation
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Astronomers measure the stars around their center of gravity by sutudying light of nearby stars
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Arno Penzias and Robert Wilson were trying to track down unwanted microwave signals they were detecting with the 20-foot horn-antenna in holmdel,New Jersey.
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12-20 billion years old and size 30 billion 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 directions
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Without the dark matter, the gas would quickly dissipate
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Inflation theory states that the Universe underwent a very rapid expansion in very short amount of time causing the cosmic microwave backround radiation to be uniform in all directions that we look
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Dark energy 73%, atoms 4%, dark matter 23% make up the universe
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13.7 billion years and size 94 billion light years
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Dr John C. Mather a NASA scientist won the nobel peace prize in physics for discoveries about the comisc microwave backround
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Cosmic Microwave Backround is the remaining light from the beginning of the universe as seen today
