The search for life beyond our solar system heated up this year when scientists reported a tantalising signal from an exoplanet of a molecule that is known to be produced exclusively by life on Earth.

A new study is proposing the idea that life on other worlds may not look like life as we know it. A research team dug into a type of reaction known as autocatalysis—a self-perpetuating reaction—long ...

A federal judge on Monday said the U.S. government denied due process to the Venezuelan men it deported to a prison in El Salvador in March after President Trump invoked the Alien Enemies Act. The ...

Claims that the Nazca mummies represent a new alien species originate from a self-published paper by a retired paleontologist. A detailed peer review challenges these conclusions, identifying the ...

A mysterious metal shard captured the imagination of the American public, because it was supposedly from a 1947 UFO that crashed on Earth. The sample seemed to have an unprecedented material structure ...

New models suggest that Europa has very little tectonic activity at its seafloor, which is potentially catastrophic news for the hopes of finding alien life within its ocean. The new findings ...