Researchers suggest the potential of a sophisticated alien civilization current on Earth earlier than people, difficult the notion that humanity is the planet’s first civilization.

The Silurian Speculation means that proof of historic superior civilizations could also be buried beneath geological layers, making detection troublesome with present strategies.

Astrophysicists Adam Frank and Gavin Schmidt spotlight fossil carbon from the Carboniferous Interval as potential gas for an industrial civilization hundreds of thousands of years in the past.

The Paleocene–Eocene Thermal Most, a major rise in international temperatures 55 million years in the past, might point out the presence of a sophisticated civilization that left behind environmental proof.

Historic superior civilizations, such because the Indus Valley, Historic Egypt, the Maya, and Mesopotamia, exhibit unexplained technological achievements that increase questions on potential extraterrestrial affect.

The Antikythera Mechanism, an historic analog pc found in a shipwreck, stays a thriller, showcasing superior expertise that didn’t reappear till the 14th century.

The seek for proof of previous superior civilizations continues, with scientists exploring Earth’s geological historical past and the potential for uncovering extraordinary secrets and techniques.