Many have claimed to see a UFO or have an encounter with an alien, but what do the scientists have to say? Here's what ...

Observations by the James Webb space telescope find possible biological activity on a giant planet 124 light-years from Earth ...

A chemical called dimethyl sulfide popped up in an analysis of exoplanet K2-18b’s atmosphere. On Earth, it’s only made by ...

Scientists find potential biosignatures hinting at life on a distant ocean-covered exoplanet, sparking new excitement.