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Age and Size
At this time, the Universe was estimated to be infinitismal and have a size of 300,000 light years. -
Landmark Discovery (2 Facts)
Professor Stanley Eddington declared that Einstein and Newton's theory of starlight bending from gravity is correct after observing the stars near the Sun during a solar eclipse. Also, Wilson found that globular star clusters which orbit a center of gravity. -
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Astronomy in Context
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Dr. Harlow Shapley
Dr, Shapely used observations of globular star clusters made with the 60 inch telescope at the Mouint Wilson Observatory. He found a common center of gravity in which the clusters were orbiting. -
Age and Size
At this time, scientists predicted that the universe was about 2 billion years old and 280 million light years big. -
Landmark Discovery (2 Facts)
Dr. Hubble found that the Andromeda Galaxy was 900,000 light years away. Therefore, it is outside the Milky Way Galaxy. Also, the speed-distance relationship between galaxies was discovered. -
Dr. Hubble
Dr. Hubble previously measured the red shift of severel nebulae; and found they were all moving away from us, -
Age and Size
The age in 1955 was estimated to be about 6 billion years old. The size was estimated to be about 4-8 billion light years. -
Landmark Discovery (2 Facts)
Walter Baade discovered that the Universe was twice as large as previously thought. Also, two star types were discovered: Type 1 and Type 2. -
Walter Baade
Walter Baade used the Hooker telescope to take images of the Andromeda Galaxy. -
Age and Size
The age was thought to be 10-25 billion years old. The size was thought to be about 25 billion light years. -
Landmark Discovery (2 Facts)
Arno Renzias and Robert Wilson discovered Cosmic Background Radiation, or CMB, that was left over from the Big Bang. -
Arno Penzias
Discovered Cosmic Background Radiation. -
Age and Size
The age was estimated to be about 12-20 billion years old. Also, the size was thought to be about 30 billion light years. -
Landmark Discovery (2 Facts)
The Inflation Theory was thought up, which reimagined the Big Bang Theory. Also, Dark Matter was discovered. -
Joseph H. Taylor
Discovered two stars orbiting each other. -
Age and Size
The age of the Universe at this time was estimated to be 13.7 billion years old. The size was estimated to be about 94 billion light years. -
Dr. John C. Mather
Discovered more information about CMB (Cosmic Microwave Background). Which is remaining light from the beginning of the Universe; as seen today. -
Landmark Discovery (2 Facts)
CMB was discovered and explored thoroughly.
