But what if aliens are transmitting messages from one exoplanet to another instead? If they exist, we may now have a way to eavesdrop ... used by transmitters. We only know of one species that ...

if we discover that Earth doesn’t harbor the only life in the universe—especially if we consider the aliens to be intelligent—we’ll probably handle first contact the same way we’ve ...

Could intelligent aliens be lurking at the heart of the Milky Way? A new search for extraterrestrial ... and tested it on known pulsars to be sure it could pick up the narrow frequencies.