Attention human. You are receiving an interstellar radio transmission. And it could be coming from one of the nearest ...

“There is a silence in the night sky that has bothered me for as long as I can remember.” That line, attributed to Richard Feynman, lands because it gets at a simple, stubborn feeling. The sky looks ...

Humans have always looked up at the night sky and wondered about our place in the vast cosmos. A Soviet astronomer named Nikolai Kardashev created a brilliant method to measure how advanced an alien ...

A new paper posits that advanced alien civilizations may communicate through subtle flashes, like fireflies do on Earth. The thought experiment suggests that we need to avoid human biases in our ...

For decades, humans have scanned for signals of alien technology emanating through the galaxy. The search highlights the contradiction between the abundance of planets and stars that stretch across ...

There is something almost offensive about a sky so full of stars and so empty of company. That is what gives Richard ...

When ET phones home, it could be his last call. Contrary to sci-fi movie depictions, our first contact might not be with a super advanced alien civilization at the height of power. Rather, Ivy League ...

In 1950, famed astrophysicist Enrico Fermi posed a profound question during a casual lunch with colleagues: Where is everybody? In other words, if there’s an extremely high probability that advanced ...

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 ...