Europa has a vast, saltwater ocean beneath its icy shell, with more than twice the amount of water in all of Earth’s oceans ...

For decades, the search for life beyond Earth has focused on distant exoplanets and the rusty plains of Mars. Now, a small ...

James Webb has detected a molecule in the atmosphere of the exoplanet K2-18b that could be linked to life. The molecule, ...

From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

Breakthrough Listen searched for technosignatures from interstellar comet 3I/ATLAS but found no unusual signals or behavior ...

In the many decades of NASA exploration, there has only been one detection that got on that scale. It was collected by the ...

Vladimir Putin jokes that interstellar comet 3I/ATLAS is Russia’s ’secret weapon,’ meant for use under extreme cases ...

Long before scientists discovered that other stars in the universe host their own planetary systems, humanity had ...

NASA's alien-hunting Europa Clipper spacecraft took seven hours of ultraviolet observations of interstellar comet 3I/ATLAS while both objects zoom toward Jupiter.

A new analysis of Saturn's moon Titan that reduced the odds of a subsurface liquid ocean has increased the chances of ...

Hidden within Cassiopeia A, the youngest known exploded star in our galaxy, astronomers have found surprisingly high levels of chlorine and potassium. These elements carry an odd number of protons in ...

Nearly two-thirds of Americans believe intelligent life exists beyond Earth, according to a 2021 study from the Pew Research Center. Meanwhile, some Americans believe that there is proof of UFOs and ...