Never-before-seen microbes living deep beneath the permafrost at one of the coldest and saltiest water springs on Earth could provide a blueprint for life on Mars.
Alien life in the deep global ocean of a water world could receive its nutrients through a shell of high-pressure ice around the planet's core.
The internet is abuzz with rumors that China may have picked up signals from an alien civilization. But the pings are probably just Earthly interference, experts say.
On Sunday (June 12), the car-sized Perseverance Mars rover snapped a photo that could be mistaken for a still from an "Indiana Jones" movie.
NASA hopes it can help move the study of unidentified aerial phenomena (UAP) off the scientific fringes and into the mainstream.
Because Earth is the only planet known to host life as we know it, researchers have usually focused on planetary systems similar to our own when searching for extraterrestrial life.
New research calculates the odds that humans will contact a 'malicious' alien civilization that wants to invade our planet. Don't worry, the chances are incredibly small.
A proposed Chinese mission would look for nearby habitable alien worlds by launching a spacecraft to make ultraprecise measurements of how orbiting planets make a star wobble.
The U.S. military aims to more systematically classify and characterize reports of unidentified aerial phenomena (UAP), officials said during a congressional hearing on Tuesday (May 17).
The U.S. Congress will hold a public hearing tomorrow (May 17) on reports of unidentified aerial phenomena (UAP) skirting through our skies, and you can watch it live.
Microorganisms living on a large slab of ancient seafloor in the Persian Gulf may reveal clues about life on other planets.
Hauling to Earth samples of Mars that might contain Red Planet life is deemed a low risk affair in terms of ecological and public safety — but that risk is not zero.
Liquid water once shaped the rock inside a meteorite from Mars, but likely did not support any microbial life, a new study finds.
Scientists suggest that one of the key characteristics of a life-supporting, rocky exoplanet is that it needs to be young enough to generate heat through radioactive decay.
The current definition of habitable zone only examines the amount of sunlight reaching a planet. It may be time to question that definition.