The Atlanta Journal-Constitution

NASA wants a moon clock, where seconds tick away faster

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NASA wants to come up with an out-ofthis-world way to keep track of time, putting the moon on its own souped-up clock.

It’s not quite a time zone like those on Earth, but an entire frame of time reference for the moon. Because there’s less gravity on the moon, time there moves a tad quicker — 58.7 microsecon­ds every day — compared with Earth. So, on Tuesday, the White House told NASA and other U.S agencies to work with internatio­nal agencies to come up with a new moon-centric time reference system.

“An atomic clock on the moon will tick at a different rate than a clock on Earth,”said Kevin Coggins, NASA’s top communicat­ions and navigation official.“It makes sense that when you go to another body, like the moon or Mars, that each one gets its own heartbeat.”

So everything on the moon will operate on the faster moon time, Coggins said.

The last time NASA sent astronauts to the moon, they wore watches, but timing wasn’t as precise and critical as it now with GPS, satellites and intricate computer and communicat­ions systems, Coggins said.

Last year, the European Space Agency said Earth needs to come up with a unified time for the moon, where a day lasts 29.5 Earth days.

The Internatio­nal Space Station, being in low Earth orbit, will continue to use coordinate­d universal time, or UTC. But just where the new space time kicks in is something that NASA has to figure out.

The White House wants NASA to come up with a preliminar­y idea by the end of the year and have a final plan by the end of 2026.

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