Some "Star Trek" aliens measure life in centuries or even millennia. Meet the remarkably long-lived species scattered across ...

After decades of secrecy, stigma, and sometimes silliness—like the conspiratorial tales about recovered spacecraft and alien ...

The curious minds at What If explore whether scientists have finally discovered traces of a Type II civilization.

Astronomers in recent study have claimed to find possible evidence of a technologically advanced nonhuman civilization on the ...

In 1961, Dr Frank Drake proposed a probabilistic, though highly speculative, equation to determine the number of intelligent ...

Researchers have focused on that part of the radio spectrum on the assumption that an advanced civilization might recognize ...

R L Drake explores the Fermi Paradox: why, given the Milky Way's billions of potentially habitable planets and the Drake Equation's estimate of 12,500 possible ...

Astronomers may have been listening for alien civilizations in only a small slice of the radio spectrum while overlooking a largely unexplored range of higher frequencies. Using archived data from the ...

If super-advanced alien civilizations exist, they would surely require insane amounts of energy to run. Now, international ...

Searching for extraterrestrial intelligence has so far primarily meant focusing on one particular type of signal—and that ...

Black holes can release enormous energy through hot disks, surrounding plasma and powerful jets, enough to support a ...

Researchers are zeroing in on more deliberate “narrow-band” alien signals, well outside the radio frequencies SETI has focused on for decades. Reading time 3 minutes For over half a century, the ...