The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...

How can radio astronomers successfully identify extraterrestrial radio signals while discerning them from Earth-based radio signals? This is what a recent study published in The Astronomical Journal ...

December 10, 2025, Mountain View, CA -- For 10 months, a SETI Institute–led team watched pulsar PSR J0332+5434 (also called B0329+54) to study how its radio signal "twinkles" as it passes through gas ...

Scientists are peering into the universe's mysterious Cosmic Dawn using the faint whispers of hydrogen radio waves emitted over 13 billion years ago. These signals, particularly the elusive ...

For decades, radio telescopes have swept the sky listening for alien signals. They’ve found nothing. A new study offers a possible explanation for the lack of results, and it has nothing to do with ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. Scientists have searched the skies for alien radio signals for more than 60 years, but all ...

Understanding how the universe transitioned from darkness to light with the formation of the first stars and galaxies is a key turning point in the universe's development, known as the Cosmic Dawn.

What are the weird radio waves detected in deep space, and how can astronomers hope to solve this Milky Way mystery?