Technology
China, Russia, and U.S. Race to Develop Lunar Nuclear Reactors
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IEEE Spectrum
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NASA's Voyager 1 spacecraft faces a power crisis as its nuclear power source dwindles, prompting an emergency shutdown of the Low-energy Charged Particles experiment to conserve power. The aging radioisotope thermoelectric generator (RTG) onboard is losing power annually, with estimates suggesting it has around 57% of its original capacity left. To extend Voyager 1's mission, engineers are planning an energy-efficient upgrade called "the Big Bang" that involves replacing power-hungry devices with lower-power alternatives. If successful, this fix could potentially allow Voyager 1 to continue its mission beyond its expected retirement date.
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World's first laser communication link between a plane and satellite ran at 1 Gbps — 10-watt laser which has a 3,417 mile range and 2.5 Gbps max data rate
General Atomics and Kepler Communications have achieved a milestone by successfully testing a laser communication link between an aircraft and a satellite, reaching data speeds of up to 1 Gbps. The Optical Communication Terminal (OCT) used in the test is equipped with a 10-watt laser capable of a 3,417-mile range and a maximum data rate of 2.5 Gbps. This technology has the potential to revolutionize high-speed communication where traditional radio-based methods fall short. The success of this test demonstrates the feasibility of using laser communication for secure and robust data transfers in tactical and operational missions. Future plans include showcasing laser communications with the U.S. Space Development Agency's Tranche-1 compatible satellites in 2026.
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