Italian American physicist Enrico Fermi once asked, “if we live in an infinite universe with infinite capacity for life, why ...

By using the Kardashev Scale, we can address some big questions about alien civilizations. Like: Fermi's Paradox. It's estimated that there are 40 billion Earth-like planets in the Milky Way that ...

Here’s how it works. The Milky Way is home to millions of potentially habitable planets — and approximately four of them may harbor evil alien civilizations that would invade Earth if they ...

Here’s how it works. It may take less than 1,000 years for an advanced alien civilization to destroy its own planet with climate change, even if it relies solely on renewable energy, a new model ...

"It's like winning the lottery." When other factors are considered — such as the fraction of hospitable planets that host any life at all and how long a signal-emitting civilization might last ...

He suggests there's a chance that water or other liquid-dwelling aliens, as well as civilizations on super-Earths, may actually be trapped on their planets due to "physical limitations," even if ...

For alien civilizations to travel hundreds of light ... and reactionaries from the planet Ork. It’s been suggested that any civilization that survives the invention of atomic weapons and ...

also known as rogue planets. The article is “Migrating extraterrestrial civilizations and interstellar colonization: implications for SETI and SETA.” The author is Irina Romanovskaya (Mullins).

Warmer climates than Earth’s could accelerate life’s development, potentially increasing the number of planets with more ...

Even powerful telescopes or visiting craft from “nearby” alien civilizations could have ... including not just planets but moons with vast oceans far deeper than our own.

so what if a distant alien civilization already had that idea and acted on it? A new paper suggests that looking for clusters of similar planets could aid in the search for extraterrestrial life ...

In more recent years, humans have also sent out a stronger signal beyond our planet: communications ... within the next century and found that alien civilizations (if they’re out there) could ...