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Hubble receives PhD at Yerkes Observatory at the University of Chicago 1917(exact date not found)
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Hubble began work at Mt Wilson Observatory, using Hooker Telescope, both the 60 and 100 in lense models, right after his army service in WWI (exact date not found)
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Hubble used Cepheid variable that can be used to measure distances to deduce that Andromeda was not a star cluster but another galaxy
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Period: to
Hubble Constant
Hubble refines his work on "redshift" and Doppler shift to explain that the universe is expanding and how fast. This calculation is known as the Hubble Constant symbol "H". Scientists and astronomers continue to study and research to validate Hubble's hypothysis and adjust the value of H as new information is available. -
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Construction phase for Hubble Telescope begins (exact date unknown)
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Space Science Telescope Institute is founded; loacted at Johns Hopkins University (exact date unknown)
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Parts start arriving for assembly at Lockheed Missiles Space Company (exact date not found)
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1st photo from Hubble returns to Earth: a very fuzzy images
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"Hubble Trouble" press conference; primary mirror too flat by 1/50th of the thickness of a sheet of paper
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1st Servicing Mission, Space Shuttle Endeavor: carries "COSTAR" the lens system to refocus light correcting the problem with the main mirror, and they replaced the camera with a newer version
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Hubble photographs comet Shoemaker-Levy smashing into Jupiter using time stop technology for photos from before impact to several days after impact
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2nd Servicing Mission; Space Shuttle Discovery, replaced the original spectrographs, and near-infrared cameras with more powerful instruments
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3A Service Mission; Space Shuttle Discovery, replaced 6 gyroscopes and the coolant
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3B Servicing Mission; Space Shuttle Columbia replaced cameras that can observe ultra-violet, visible, and near-infrared with 2x the size and sharpness
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4th Servicing Mission; Space Shuttle Atlantis, most challenging servicing mission; added wide lense camera and a Cosmic Origins Spectrograph. new technologies added allowed them to remove COSTAR as the new instruments were built to make corrections for H
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2018 will see James Webb Space Telescope launched: an infrared observatory stationed over 1 million miles from Earth beyond the moon's obstructive light. Hubble has been unable to reveal formation of very first stars in cluster galaxies and that will be