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Four centuries from launch, a vast spacecraft could deliver thousands of people to a world orbiting the nearest star. The ...
The Hubble Space Telescope has captured the best picture yet of a high-speed comet visiting our solar system from another ...
Space weather experts warn that a moderate-strength geomagnetic storm could hit Earth Friday or Saturday (Aug. 8 or 9) — ...
Many hope that AI will discover ethical truths. But as Gödel shows, deciding what is right will always be our burden ...