The Earth may be crawling with undiscovered creatures with a different biochemistry to life as we know it.
Human's evolved through a series of highly unlikely events—so finding another intelligence like us would be like winning the lottery many times over.
Astronomer says he is "not paying much attention to what happens in Area 51."
Do you care about the search for extraterrestrial intelligence? Let these researchers know.
Breakthrough Listen is a program designed to search for evidence of alien life by scouring the the skies for distant radio signals.
Laguna Caliente in Costa Rica is one of the harshest environments on Earth for life.
Are we looking for aliens in the wrong way?
"I think that in this century we are going to be finding life beyond Earth," said Jill Tarter, a scientist at the SETI Institute research center in California.
The same heavy elements that boost our economy could boost theirs.
Radio waves are fast, but not fast enough to reach us before a civilization goes extinct.
There could be thousands of rocks from distant solar systems just killing time in our neighborhood.
"We cannot discount the possibility that it really is a spacecraft."
Douglas Vakoch of METI announced messages were sent to the GJ273 system over three days in October.
Shostak bets everyone a "cup of coffee" that alien life will be found in next few decades at Worlds Fair Nano NY event.
Search for Extra Terrestrial Intelligence (SETI) has clear protocols for what should happen if and when we are contacted by extraterrestrial lifeforms.
Life on one planet could easily spread to another, according to the numbers.
Researchers searching for extraterrestrial intelligence are talking about a signal observed by a telescope in Russia.
New calculations based on NASA data find that humans are probably not alone in the universe.