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The Search for Primitive and Intelligent Life on Other Planets is one of the greatest scientific quests in human history.

Watch NASA's live ISS cameras capture something mysterious outside the station — a real-time view of space like you've never ...

For every mystery we solve, the universe reveals another. Hidden energies, ancient light, and unexplained phenomena continue ...

What if everything you've ever known—every star, every breath, every second—was part of a story written in the fabric of time itself ...