intelligent alien civilizations

Extraterrestrial neighbors? Our galaxy contains over 30 intelligent civilizations, new calculations suggest

In 1961 the astronomer Frank Drake proposed what became known as the Drake equation, setting out seven factors that would ...
exoplanet earth resize md

‘Politics and war’: Why life on other planets would look a lot like our own

If other beings do populate the universe, what are they doing out there? Are the possible inhabitants of Teegarden b, ...
seti

Are we alone? If not, why hasn’t anyone dropped by Earth for a visit?

Scientists disagree on the probability that advanced extraterrestrials exist somewhere in the universe. Among the biggest arguments against aliens is ...