When a hunk of ice from another star system hurtles through our cosmic neighborhood, astronomers pay attention. When that ...

Aristotle believed the planets revolved around Earth and God could not have created other worlds. Today, scientists scour the ...

Explore how cutting edge telescopes, AI, and new detection methods are transforming the extraterrestrial life search and ...

For over six decades, the Search for Extraterrestrial Intelligence (SETI) has been tirelessly scanning the cosmos for signs of alien life. Despite its extensive efforts, the universe remains eerily ...

Trump has ordered a UFO data release. But if aliens exist, what would they think of us? - For generations, human beings have wondered: What would alien life from another planet be like ...

(cokada/iStock/Getty Images) Alien megastructures built to harvest stellar energy or alter the orbits of stars may be ...

reports of alien abductions and recovered memory syndrome or studies that don't reach traditional levels of significance. But neither controversial phenomena nor potentially illuminating but ...

Comet 41P/Tuttle-Giacobini-Kresak has begun acting a little unusually, but there are likely natural explanations before we go ...

In these science fiction books, extraterrestrial beings are sympathetic, horrifying and everything in between.