A communications method that uses pulsed laser beam to send ...
Inmarsat plc is a British satellite telecommunications ...
Earth, one of the eight planets in the solar system, ...
Kwangmyŏngsŏng-3, meaning Bright Star-3, is a North Korean ...
A deep space rocket designed by NASA for sending astronauts ...
Apollo 1 tragedy happened during the test,with the Command ...
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