High-Orbit Laser Satellites Could Guide Future Lunar Travelers
MIT researchers have proposed a deep-space navigation system called LightHOUSE, which uses a fleet of satellites in high orbit to provide precise positioning for lunar and interplanetary travelers. This system aims to bypass the limitations of Earth-based telescopes, which currently struggle with the latency and bandwidth demands of modern space missions.
Why it matters
As space travel increases, reliable navigation infrastructure is essential for safety and mission success beyond Earth's orbit.
Cislunar space is already getting crowded. And with that crowding comes infrastructure complications. One is navigation - there is no Global Positioning System available when you're not on the globe. Finding a spacecraft’s exact orbital path relies on networking with the Deep Space Network (DSN), a set of telescopes originally developed in the 1950s to communicate with spacecraft far afield. DSN itself is already getting overwhelmed with managing all of the missions requesting its time, so getting a precise orbital location currently can take hours. But researchers at MIT’s Lincoln Laboratory think they might have a solution for this - launching a fleet of three satellites to collectively create a deep-space navigational system known as the LIght High-Orbit Utility Signal Emitter - LightHOUSE.
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