Assuming intelligent aliens know how to harvest energy from stars, would humanity be able to spot these high-level structures?

As per a new study, Dyson spheres around faint stars in the galaxy could offer new techno-signatures clues.

Some believe the Betz mystery sphere, a steel ball that a Florida family found on their property in 1974, is a piece of alien technology. Here’s the truth.

Some still question the origins of the strange steel ball a Florida family found on their property in 1974. Could it be alien technology? The military—and even ufologists—examined the sphere and said ...

Theoretically, it’s impossible for us to perceive a 4D creature. That is, unless it broke into our three-dimensional reality.