The first unmistakable signal from another intelligence may not be a cheerful greeting. A growing group of researchers is arguing that our inaugural contact is more likely to be a distress call, the ...
For decades, scientists have been actively searching for signs of extraterrestrial life. Fromradio waves to laser flashes and infrared heat signatures, the hunt for alien technosignatures has ...
An illustration showing what the TRAPPIST-1 system might look like from a vantage point near planet TRAPPIST-1f (NASA/JPL-Caltech) They failed to find any, despite undertaking what is the longest ...
The interstellar object 3I/ATLAS, captured by the James Webb Space Telescope, shows what astronomers see as an unusual chemical composition as it nears the Sun. NASA says it behaves like a comet, ...
Astronomers have detected alien signals - that is, signals from a foreign galaxy - being emitted in an unusually regular 16-day cycle. Fast radio bursts (FRBs) are not in and of themselves unusual - ...
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