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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.
Arecibo: The Largest Telescope
Explanation: The Arecibo radio telescope is currently the largest single-dish telescope in the world. First opening in 1963, this 305 meter (1000 foot) radio telescope resides in a natural valley of Puerto Rico. The Arecibo telescope has been used for many astronomical research projects , including searches and studies of pulsars , and mapping atomic and molecular gas in the Galaxy and the universe . As the Arecibo dish can also be used to send radio waves, it has bounced and recorded radiation off of planets in our Solar System , and has even broadcast messages to areas of the Galaxy that might contain intelligent extra-terrestrial life . Any person in the world may use the telescope, providing their proposal is selected by a review committee.
Information: The Scale of the Universe Debate in April 1996
| Date | March 9, 1996 |
|---|---|
| Credit | Credit: National Astronomy and Ionosphere Center, Cornell University, National Science Foundation |
| Authors & editors: | Robert Nemiroff (MTU) & Jerry Bonnell (UMCP) |
| A service of: |
ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U. |