In this series, we cover provocative questions in astronomy. This week: the mysterious extragalactic signals known as Fast ...

SETI normally listens for extraterrestrial signals. A SETI team has switched roles and considered where aliens can hear us ...

Astronomers discover an unusual neutron star that emits double pulses, challenging theories about stellar remnants.

NASA's global Deep Space Network ensures that communication with the spacecraft and probes is successful, no matter where ...

Their analysis revealed that radio signals, such as planetary radar emissions from the former Arecibo Observatory, are ...

Their research reveals which Earthly 'technosignatures' would be easiest to detect from a planet across the galaxy.

During the Cold War, American and Soviet scientists embarked on an unprecedented quest to contact extraterrestrials. But ...

Pulsar hunting nights are now the new way to stargaze. These evenings let participants detect signals from pulsars, which are ...

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

Scientists measured a chorus wave emerging from an unexpected place, and confirmed a key piece of a theory about how these ...

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Drone defense startup Hidden Level Inc. announced today that it has raised $65 million in new funding to scale manufacturing, ...