"Six Thousand Years" is a concept often associated with certain interpretations of biblical chronology, particularly from the Book of Genesis. It suggests that the Earth and humanity have existed for approximately six thousand years, based on genealogies and timelines outlined in the scriptures. This belief is commonly held by some Young Earth Creationists, who argue that this timeframe aligns with a literal reading of the Bible. In contrast, mainstream science supports an age of the Earth of about 4.5 billion years, based on geological and astronomical evidence.