The U.S. government has directed NASA to give the moon its own time zone.
The space agency has until the end of 2026 to establish “Coordinated Lunar Time (LTC),”according to a memo sent to NASA by the U.S. Office of Science and Technology Policy (OSTP).
Lunar time will run differently from time zones on Earth. Because there’s less gravity on the moon, time there moves slower than on our planet — lagging behind by 58.7 microseconds every day. This seemingly small difference is enough to throw off the precise maneuvers of lunar spacecraft and satellites.
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“The same clock that we have on Earth would move at a different rate on the moon,” Kevin Coggins, NASA’s space communications and navigation program manager, told Reuters.
LTC is being set up in anticipation of NASA’s return to the moon. Following the Artemis 1 test flight, which sent NASA’s uncrewed Orion capsule on a round trip to the moon in November 2022, the space agency plans to send humans into orbit around the moon in 2025 and onto its surface in 2026.
These missions will be vital steps towards NASA’s greatest ambition for the Artemis program: taking humans to Mars.
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With dozens of countries and companies involved in new missions to the moon, a standardized way of synchronizing clocks is vital.
“Think of the atomic clocks at the U.S. Naval Observatory (in Washington). They’re the heartbeat of the nation, synchronizing everything,” Coggins told Reuters. “You’re going to want a heartbeat on the moon.”
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