I n 1963, the Arecibo Observatory became operational on the island of Puerto Rico. Measuring 305 meters (~1000 ft) in ...

The National Science Foundation (NSF) has deemed the radio telescope housed within the Arecibo Observatory no longer fit for ...

They all happened at the Arecibo Observatory in Puerto Rico. With a spherical reflector dish that was 305 meters (roughly ...

Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST) and by analyzing archival Arecibo Observatory data, ...

In a theoretical study, researchers explored how a twin Earth with human-like life and technology might detect our ...

If an extraterrestrial civilization existed with technology comparable to ours, would they be able to detect Earth?

A research team led by Dr. Sofia Sheikh of the SETI Institute, in collaboration with the Characterizing Atmospheric ...

Virkki used radar to track near Earth objects at the Arecibo Observatory in Puerto Rico until the 900-ton equipment platform ...

Note: As of January 2025, the site is closed to the public until further notice. The Arecibo Observatory has a rich history. Scientists used the site's massive telescope to collect data about ...

If extraterrestrial civilizations exist with technology similar to ours, could they detect Earth? A team of SETI researchers ...

SETI scientists try to determine whether aliens at a similar technology level to humans could detect Earth and from how far ...