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.
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.
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.
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."
Shostak bets everyone a “cup of coffee” that alien life will be found in next few decades at Worlds Fair Nano NY event.
As the two-decade mission draws to a close, what has it revealed about the second largest planet in our solar system?
Breakthrough Listen project observes 15 fast radio bursts coming from dwarf galaxy 3 billion light-years away.
New theory about the cause of dips in light from a star emerge as scientists continue to monitor its weird behavior.
The maps depict Earth’s position relative to the sun, using pulsars that can remain active for billions of years.
China is seeking one of the few foreigners qualified to run the Five-hundred-meter Aperture Spherical radio Telescope, but there are some drawbacks.
The position comes with a six figure salary and a “secret” security clearance.