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advanced civilization

Egyptian pyramids under a night sky. Several researchers believe astronomical alignments at this site point to signs of an ancient advanced civilization.

Ancient Astronomical Alignments: Reading and Mapping the Stars at Early Advanced Civilization Sites

Many of the cuneiform tablets of Mesopotamia and hieroglyphs of Egypt make reference to the sun, stars, or planetary positions. Also, a number of ancient structures in many parts of the world are...
Sunken city in Cuba

What Happened to the Sunken City of Cuba?

Just over a decade ago, a team of explorers were working on an exploration and survey mission off the western coast of Cuba when their sonar equipment picked up a perplexing series of stone...