A Brief-ish History of SETI. Part IV: Arecibo and the WOW! Signal
During the 1970s, pioneering experiments were conducted that are known today as Messaging Extraterrestrial Intelligence (METI). At the same time, NASA launched four spacecraft boun...
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During the 1970s, pioneering experiments were conducted that are known today as Messaging Extraterrestrial Intelligence (METI). At the same time, NASA launched four spacecraft boun...
For ten years, astronomers at UCLA have been pointing one of the world's most powerful radio telescopes at the stars and listening. Not for pulsars or gas clouds, or the hiss of th...
Astronomers in Japan have recently launched what they say is the country’s first organisation dedicated to the search for alien life, with radio observations planned in the summer...
During the 1970s, the first interstellar probes were launched, carrying messages specifically designed to be intelligible to extraterrestrial species. The messages were essentially...
We have been searching for signals from other civilizations for over sixty years. Radio telescopes on Earth have swept the sky, listened patiently, and found nothing but silence. I...
A rare cosmic signal has revealed the origins of a mysterious class of radio bursts.
Don't touch that dial. The post Sun Suddenly Blasts Powerful Radio Transmission for 19 Continuous Days appeared first on Futurism.
For the first time in history, scientists have used a spacecraft on the far side of the Moon to search for signals from extraterrestrial intelligence. China's Chang'E-4 lander sat...
The acquisition of the radio frequency signal from the Artemis II crewed mission to the moon by NASA's Deep Space Network (DSN) is indicated by the peak in the data signal shown on...
In December 2019, astronomers detected a one hour brightening of a star in the Large Magellanic Cloud, a classic gravitational microlensing event. These occur when a compact object...
Detecting extraterrestrial signals may require searching farther and longer than previously expected. For decades, scientists have scanned the sky for evidence of extraterrestrial...
Twelve hours after the US and Israel began bombing Iran on February 28, 2026, a shortwave radio signal started broadcasting in Persian — a man's voice, counting random numbers, fol...
Could the "Great Silence" be the result of extraterrestrial civilizations dying out before they can make contact, or will they evolve to the point where communication with them is...
It took four spacecrafts to build the full picture.ScienceAlert stories are written, fact-checked, and edited by humans, never generated by AI. Don't miss a story, subscribe here.
Learn more about the space weather impacting our search of etraterrestial life and what research is planning to do about it.
Historical observations from an observatory in Germany have now independently verified evidence for brief, mysterious flashes of light in the night sky, first picked up by an Ameri...
When NASA's Artemis II spacecraft carried four astronauts around the Moon earlier this year, the world's largest fully steerable radio telescope was quietly watching from a quiet v...
The Fermi Paradox is the question of why we haven’t been contacted by any extraterrestrial species. In a recent paper, astrophysicists analyzed the paradox by instead examining how...
Learn how NASA spacecraft tracked a record-breaking solar radio burst that circled the Sun for 19 days and what the signal reveals about how solar activity lingers in space.
In China, the FAST radio telescope watched a repeating fast radio burst called FRB 121102 and...
By the mid-20th century, the Search for Extraterrestrial Intelligence would emerge as an established field of scientific research. The era witnessed the first experiments, and many...
The Sun unleashed a bizarre radio signal that kept broadcasting for 19 straight days, leaving NASA scientists stunned. A radio burst detected from the Sun in August 2025 initially...
A major SETI search found no artificial narrowband radio signal from K2-18b, but it sharpened the tools for future searches. K2-18b has become one of the most discussed worlds in r...
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