If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the ...

Add Yahoo as a preferred source to see more of our stories on Google. On November 16, 1974, humans sent their first message to the stars in an attempt to contact extraterrestrials.They did this using ...

One of the most famous messages ever beamed to space was a string of 1,679 bits sent by the Arecibo radio telescope in 1974. But if E.T. sent us such a string, how could we Earthlings even begin to ...

In 1963, the Arecibo Observatory became operational on the island of Puerto Rico. Measuring 305 meters (~1000 ft) in diameter, Arecibo's spherical reflector dish was the largest radio telescope in the ...

The vastness of space held various secrets that were yet to be discovered, and among them lay the potential of extraterrestrial life. Finding alien life on unknown worlds was a mission of interest for ...

Add Yahoo as a preferred source to see more of our stories on Google. Before-and-after images of the Arecibo Observatory show a dramatic collapse that ended an era in space research. Astronomers ...

The Arecibo message—beamed via interstellar radio in 1974 from its namesake telescope—was “humanity’s first attempt to send out a missive capable of being understood by extraterrestrial intelligence,” ...

The Arecibo Telescope was an amazing tool for astronomers. Built in the early 1960s, it had a 1,000-foot-wide dish and was capable of both receiving and transmitting radio signals. It did radar ...