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Age: Infinite
Size: 300,000 light years. -
Both Einstein and Newton's theories predicted that gravity would bend starlight as it passed by the sun.
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Dr. Harlow Shapley's new observations of globular star clusters made with the 60 inch telescope at the Mount Wilson Observatory. He found a common center of gravity.
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His observations showed that the center of the Milky Way is 60,000 light years from the Sun, and the Milky Way is 300,000 light years across.
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Age: 2 billion years
Size: 280 Million light years -
Dr. Hubble took photos of "Spiral Nebulae" with the Hooker Telescope. Those nebulae showed individual stars, including cepheid variable stars.
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There were three different types of galaxies that Dr, Hubble identified and they were the Sprial, Elliptical, and Irregular.
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Dr. Hubble had previously measured the red ship of several nebulae, and found that they were all moving away from us. Dr. Hubble took this work a step further by looking at the speed- distance relationship between galaxies.
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Age: 6 billion
Size: 4-8 billion light years -
Walter Baade used the Hooker telescope at the Mount Wilson Observatory to take images of Andromeda. He found there were two types of stars.
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Type 1: Brighter, Bluer, and lie in open clusters in Adromeda's disk.
Type 2: Fainter, red, and lie in globular clusters. -
The origin of the universe was either made up of by the big bang or the steady state theory.
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Age: 10-25 billion years
Size: 25 Billion light years -
Arno Penzias and Robert Wiltzin 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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The three scientists who missed cosmic background radiation in their data were Emily LeRox, Andre Dorosh Kevic, Edward Ohm.
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In NGC 3521 and NGC 972, astronomers are finding that the amount of light we see does't match what we would expect from that much matter.
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Without having dark matter in our solar system, the gas would quickly dissapate.
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Age: 12-20 billion years
Size: 30 billion light years -
The Universe started as a dense ball of energy that began to expand, distributing hot radiation and space outward in all directions. As the Universe expanded and cooled, it produced quarks and electrons, then protons, and neutrons.
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Inflation theory states that the Universe underwent a very rapid expansion in a very short amount of time causing the cosmic microwave background radiation to be uniform in all directions that we look.
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Age: 13.7 billion years
Size: 94 billion light years -
Dark energy: 73%
Atoms: 4%
Dark matter: 23% -
Dr. John C, Mather is a NASA scientist who won the Nobel Peace prize in Physics for discoveries about the cosmic microwave background.
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What does it stand for? Cosmic Microwave Background.
Definition: Remaning light form the beginning of the Universe as seen today.
