Arecibo wasn't the first time Drake pondered how to address an alien audience.
We could use the same radio frequencies as the Arecibo message, but why not do something a little more dramatic?
Much of the work is done by Cornell University's Arecibo radar-telescope in Puerto Rico, which is facing federal funding cuts.
On Nov. 16, 1974, astronomer Frank Drake dedicated a new observatory in Arecibo, Puerto Rico, by sending humankind's first deliberate communication to extraterrestrials.
The Goldstone and Arecibo observations will provide a spectacular data set.
The project directed by the National Geographic Channel and Arecibo Observatory is sending a response to the " Wow signal" some 35 years after the event.
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Staff tell an apocryphal-sounding anecdote from the Search for Extraterrestrial Intelligence, when a promising signal turned out be a technician warming his lunch at the Arecibo Observatory in Puerto Rico.
In its solar system there is another planet, Gliese-581d, that is also of interest in the search for life, according to the Planetary Habitability Laboratory at the University of Puerto Rico at Arecibo.
"There is no agreement by the astrobiology community on how to measure habitability, " said Abel Mendez, director of the Planetary Habitability Laboratory at the University of Puerto Rico at Arecibo, who is working on several planetary indexing systems.
Arrange the message in 73 rows of 23 numbers, and you get a picture painted in bits. ( Click here to see the decoded Arecibo message.) It was a novel approach, but the message was hidden, and it depended on aliens making leaps of logic in order to decipher it.
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