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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 ...

Before-and-after images of the Arecibo Observatory show a dramatic collapse that ended an era in space research. Astronomers mourned the loss of the observatory, which faced natural disasters. For ...

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 ...

Scientists want to send an updated version of the colorful Arecibo Message, a 1974 transmission sent deep into space to any awaiting aliens. In 1974, NASA sent an unusual message a long way into space ...

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48 years ago, scientists began broadcasting a message into the depths of space, hoping to contact alien life in an attempt to establish communication. Known as the Arecibo message, scientists used ...

The Arecibo Observatory, a legendary radio telescope nestled in the lush mountains of Puerto Rico, has served as an essential lookout into the cosmos for nearly six decades. From tracking asteroids to ...