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APOD
Astronomy Picture of the Day
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
Edwin Hubble Discovers the Universe
Explanation: No person in history has had greater impact in determining the extent of our universe than Edwin Hubble . From proving that other galaxies existed to proving that galaxies move apart from one another , Hubble 's work defined our place in the cosmos. Hubble lived from 1889 to 1953 and is shown above posing with the 48-inch telescope on Palomar Mountain and his famous pipe. In memory of his great work, the Orbiting Space Telescope was named after him . Today a great controversy rages on the rate of the universe's expansion, parameterized by a quantity known as Hubble's constant . A real live debate on this subject will take place in Washington, DC this April.
| Date | February 17, 1996 |
|---|---|
| Credit | Credit: Mt. Wilson Archive, Carnegie Institution of Washington |
| Authors & editors: | Robert Nemiroff (MTU) & Jerry Bonnell (UMCP) |
| A service of: |
ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U. |