light speed
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What is the top speed for a space probe now and in the future?
Asked by talljasperman | 9 responses -
Where can I find space-time calculators online?
Asked by Futomara | 7 responses -
What is this device used in Star Wars?
Asked by intro24 | 5 responses -
A question about time travel (theoretical physics)...
Asked by wundayatta | 21 responses
