The late theoretical physicist left a chilling warning about what might happen if humans make contact with a UFO, and one ...

The Kardashev Scale, first proposed by Russian astronomer Nikolai Kardashev, measures the technological advancement of ...

In the grand sweep of Earth’s four-billion-year history, 300 years is barely a blink. And yet, that blink — our industrial era — has already reshaped the atmosphere, oceans, and sediments. If ...

What if an advanced civilization lived on Earth millions of years ago, long before humans? Would we even know? The Silurian Hypothesis explores this mind-bending idea, questioning what clues such ...

But a civilization would need to produce far more heat, light and satellites than Earth does to be detectable across the vastness of space using technology humans currently possess.

Any alien civilisation near Earth will have to be more technologically advanced than humans to find them, reveals a new study. Researchers, including those from Manchester University, used crowd ...

We worked out that an alien civilization near these locations would, however, need much better telescopes than we have to detect the Earth’s mobile radio leakage. But that would be quite probable, ...