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The first dimension is height, the second is width, the third is depth, and the fourth is time, but no one has yet been able to explain what is the fifth dimension.

Archaeologists from Turkey discovered the ruins of a castle belonging to the Urartu civilization during underwater excavations in Lake Van.

Officials in the country have announced plans to build a lunar base by 2030.

Scientists have come up with 12 hypotheses why we haven't detected signs of alien civilizations yet.

This is one of the oldest known records of a child born in ancient Sumer.

But first, the company promises to store eggs and sperm in orbit and perform the first extraterrestrial artificial insemination.

NASA has already recorded bursts of radiation from the Sun that could kill a human, but that was in 1972 and would only hit astronauts in orbit.

For decades, the mystery of the "Sailing Stones" has left many scientists puzzled and unanswered.