NASA | SEXTANT: Navigating by Cosmic Bea...

NASA | SEXTANT: Navigating by Cosmic Beacon SEXTANT: Navigating by Cosmic Beacon Imagine a technology that would allow space travelers to transmit gigabytes of data per second over interplanetary distances or to navigate to Mars and beyond using powerful beams of light emanating from rotating neutron stars. The concept isn't farfetched.

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