The discovery opens up the tantalizing possibility that on other planets, life forms that need only atmospheric gas to survive exist, too.
A key version of an element could be a sign of life elsewhere.
NASA already explained the "concretion" phenomenon when a similar image made the rounds in 2014.
Jocelyn Bell analyzed over 100 feet of data every day by eye before finding "scruff" on the chart records.
Saturn's Enceladus has become a prime search location for alien life as potentially habitable waters appear to flow beneath its icy crust.
Dark surface features on Mars reinterpreted by scientists two years after NASA announcement.
"Whatever this object is, I think there's a good chance it may not be a meteor at all."
The government claims not to be in the business of investigating UFOs. John Greenewald and many other researchers disagree.
Douglas Vakoch of METI announced messages were sent to the GJ273 system over three days in October.
Scientists at the NASA Goddard Space Flight Center called the flight a "breathtaking ride."
China has become an alien-scouting superpower.
"Lazy animator" gave a glimpse of how futuristic films might look like if AI takes over the job of filmmaker.
"So he kinda goes through this whole serious spiel and then, right before he goes up to hit his putt, he goes, 'And you won't believe what the aliens look like.'"
Bettina Rodriguez Aguilera, who is running for a Miami congressional seat, made her claim about aliens in a 2009 interview.
The musician has long been an advocate of exploring outer space.
China's FAST telescope has been running for one year, and initial results are "encouraging," scientists say.
Actor Doug Jones tells Newsweek his plans for the streaming show's alien officer.
The visibly intoxicated man asked to speak with the "president of the town."
The scientists also say similar shields could already be in use by advanced alien civilizations.
Shostak bets everyone a "cup of coffee" that alien life will be found in next few decades at Worlds Fair Nano NY event.
The Topol RS-12M can be fitted with a nuclear warhead and travel up to 6,800 miles, but it was local Russians who were most shaken by Tuesday's launch.