Radio astronomer Emma Chapman explains why the radio view of the universe is so crucial to space exploration, astronomy, and ...

The universe is vast and teeming with stars – but if intelligent life exists, it may not be able to visit Earth.

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for ...

Alien civilizations, cosmic signals, and megastructures drive this deep search for intelligent life beyond Earth. The video ...

A space boffin says intelligent aliens 'absolutely' exist, but blasts UFO cover-up theories as she waits for an ET radio ...

A well-known conspiracy theory (also seen in The X-Files) attests that aliens are in communication with the U.S. government, ...

While the Catholic Church teaches nothing definitive on extraterrestrial life, over the centuries Catholic intellectuals have considered the question. In the 15th century, German Cardinal Nicholas of ...

So many things had to happen for us (humans) to end up here (Earth). Our species is made possible because a water-filled planet orbits a particular distance away from a star of a particular size.

The Drake Equation helps scientists estimate the odds of finding intelligent alien civilizations. It’s an age-old question: Do aliens exist? And what are the odds we’ll make contact? A famous ...

Where are all the aliens? No, I don’t mean microbes on Mars or creatures swimming beneath the ice crusts of Europa or Enceladus, but honest-to-God intelligent aliens, capable of space travel? The ...