Aliens & Extraterrestrial
UFOs, alien life, extraterrestrial theories, and space mysteries. Are we alone in the universe? Explore the evidence and the theories.
Could We Detect a Civilization Without Receiving a Message?
Suppose an alien civilization exists somewhere in the Milky Way. Now suppose it never sends Earth a message. Would that make the civilization impossible to detect? Not necessarily. A technologically…
ENTER STORY ↗Every story opens another question.
What Is the Fermi Paradox Really Asking?
The Fermi Paradox is often summarized as a simple sentence: if the universe is so large, where is everybody? But…
Why Do Scientists Listen for Technological Signals?
Imagine pointing a radio telescope toward a distant star and discovering a signal that does not look like the ordinary…
Biosignatures: What Evidence Could Reveal Life Beyond Earth?
Finding life beyond Earth may not begin with a photograph of an alien organism. It could begin with chemistry. Imagine…
What Makes a Planet Habitable?
When astronomers say that a planet might be “habitable,” they are not saying that it is another Earth. They are…
The Drake Equation: Can We Estimate How Many Civilizations Exist?
How many technological civilizations might exist in the Milky Way? It sounds like a question that should be impossible to…
What Would Count as Evidence of Alien Life?
Suppose scientists announce that they have found “evidence of alien life.” What would that actually mean? It would probably not…
Technosignatures: What Would an Alien Civilization Actually Look Like?
If an alien civilization exists, what would its technology look like from Earth? We usually imagine radio messages because radio…
The Fermi Paradox: If the Universe Is So Big, Where Is Everybody?
The Milky Way contains hundreds of billions of stars. The observable universe contains vastly more galaxies. With so many planets,…
Could Life Exist Beyond Earth? India’s Search for the Answer
An Indian-rooted exploration of a question with global relevance.