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 ...

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 ...

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 ...

For decades, radio SETI searches have focused on one important question: if another technological civilization is trying to contact us, how would they send that message? For Dr. Zuckerman, the ...

For decades, SETI researchers have focused on finding narrow-band radio signals that might stand out from the natural universe. But what if an advanced civilization that wanted to communicate would ...