extraterrestrial life
Why Venus Might Have Once Been a Habitable World
Climate models suggest it may have had liquid water at its surface, even snowfall.
If We Want to Find Aliens, We Need to Save the Arecibo Telescope
Arecibo Observatory, the world's largest radio telescope and an alien hunter's best bet at finding extraterrestrial life, could lose its funding and shut down.
A New Equation Estimates the Chances of Life Arising on a Given Planet
An astrobiologist and a chemist team up on a new equation to describe the conditions needed for life to arise on a planet.
In Long-Lost Radio Interview, Carl Sagan Talks Aliens and Religion
“We’re in the galactic boondocks.”
See Jupiter’s Northern Lights at the Height of a Solar Storm
Exploring the relationship between planets’ magnetospheres and solar winds could ultimately help identify habitable exoplanets.
If We Want to Find Aliens, We Should Search for the Ones Searching for Us
A paper published today in Astrobiology details a new strategy for seeking out intelligent life.
Turns Out This Earth-Like Planet Is Probably Uninhabitable
Kepler-438b is one of the most Earth-like exoplanets, but it's victim to coronal mass ejections.
If Aliens Really Did Build that Star's 'Megastructure', They Aren't Bragging
SETI found no artificial radio signals coming from the so-called "WTF Star."
This May Be the Closest Look We Get of Saturn’s Moon Enceladus for Decades
NASA's Cassini orbiter sent back the first images from its daring flyby.
How Astronomers Will Determine If That 'Megastructure' Really Is Alien
It’s very unlikely that aliens built a Dyson sphere around the star KIC 8462852. Let’s study the hell out of it anyway.
Why Cassini’s Close Flyby of Saturn’s Moon Is Exciting for Alien Hunters
Cassini is plunging into Enceladus's plumes of water vapour today.