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Debbie Goldsmith 🏳️‍⚧️🏳️‍🌈

If you're curious why time passes more quickly on the Moon, it's this:
en.wikipedia.org/wiki/Gravitat Because Earth's gravity is higher, there’s more time dilation than on the Moon (by about 58.7 microseconds per day, or 2.144 seconds per century).

One way to think about it is that the local neighborhood of spacetime for someone standing on the Earth's surface is boosted (“tilted”, in a 4D sense) relative to that for someone far away from any massive body.

#GeneralRelativity #time

3 comments
Ian Bradbury

@dgoldsmith - that’s a great link, after reading the page twice I’m sure I don’t fully appreciate/understand the topic.

However this line has zapped my brain….. “Relative to Earth's age in billions of years, Earth's core is in effect 2.5 years younger than its surface”

Debbie Goldsmith 🏳️‍⚧️🏳️‍🌈

@ianbradbury The planet orbiting the black hole in “Interstellar" is an extreme example (if you've seen that, or know the plot).

Ian Bradbury

@dgoldsmith - yes, of course, I forgot about that. Great film.

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