You’re not allowed to visit the part of Nevada known as Area 51. That’s because it’s a top-secret government facility. But the secrecy has to do with spy planes, not space aliens.
A congressional subcommittee on unidentified anomalous phenomena met to hear testimony from military officers.
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All who testified before a congressional subcommittee claimed that UFOs pose a threat to national security, though there’s still no public evidence that UFOs are extraterrestrial.
SETI has been listening for markers that may indicate alien life – but is doing so ethical?
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While UFO videos might seem compelling, they’re rarely backed up with evidence. A sociologist explains why claims of alien life gain traction through both social and mass media every few years.
The xenomorph from Ridley Scott’s 1979 classic, Alien.
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The Jupiter Icy Moons Explorer and Europa Clipper missions will arrive at Jupiter in the 2030s and provide researchers with unprecedented access to the icy moons orbiting the gas giant.
With more than 5,000 known exoplanets, astronomers are shifting their focus from discovering additional distant worlds to identifying which are good candidates for further study.
The technology of an advanced alien civilization is likely to produce many signs that could be detected across the vastness of space. Two astronomers explain the search for technosignatures.
Astronomers think the most likely place to find life in the galaxy is on super-Earths, like Kepler-69c, seen in this artist’s rendering.
NASA Ames/JPL-CalTech
Newly discovered super-Earths add to the list of planets around other stars that offer the best chance of finding life. An astronomer explains what makes these super-Earths such excellent candidates.
TRAPPIST-1e is a rocky exoplanet in the habitable zone of a star 40 light-years from Earth and may have water and clouds, as depicted in this artist’s impression.
NASA/JPL-Caltech/Wikimedia Commons
Life on Earth has dramatically changed the chemistry of the planet. Astronomers will measure light that bounces off distant planets to look for similar clues that they host life.