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Figarosmom

(9,988 posts)
Tue Jan 20, 2026, 12:08 AM Tuesday

It is the earth that moves. Not the stars. In video

Last edited Tue Jan 20, 2026, 01:07 AM - Edit history (2)

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Bluetus

(2,367 posts)
2. That is really cool photography, and puts our tiny speck of the universe into perspective. But being pedantic,
Tue Jan 20, 2026, 12:29 AM
Tuesday

the stars are all moving too. Everything in the universe is moving at an enormous rate, and other galaxies are moving away from us at something like 70 km per second per mega-parsec. That is to say, the farther away a galaxy is from us, the faster it is moving away from us. And the current consensus is that there is no force that will ever cause the universe to collapse.

JoseBalow

(9,215 posts)
3. "the stars are all moving too"
Tue Jan 20, 2026, 12:58 AM
Tuesday

Indeed, they are. The entire universe is in constant motion.

It takes our Sun approximately 225 to 250 million years to complete an entire orbit around the Milky Way galaxy. The relative positions of the stars and constellations that we see are different than they were a few hundred years ago, and different from how they will appear a few hundred years from now...

Which is why astrology is truly ridiculous nonsense.

Intractable

(1,710 posts)
4. All that effort to set up the tripod and motors, and he films it with a phone.
Tue Jan 20, 2026, 01:52 AM
Tuesday

It's a vertical strip on my screen occupying less than a third of the standard viewport.

Intractable

(1,710 posts)
6. It's not a widescreen video -- period. It doesn't matter where or how you watch it.
Tue Jan 20, 2026, 01:59 AM
Tuesday

It's still a vertical strip on the screen.

These Earth rotation videos are nothing new. The photographer ran the marathon, but stopped in the 25th mile.

Bluetus

(2,367 posts)
10. Yes, everything is in motion reltive to everything else. But each object
Tue Jan 20, 2026, 10:18 AM
Tuesday

is moving very rapidly outward from the center of the "big bang", regardless of other bodies.

As galaxies are in rotation, some of the bodies are moving outward faster than others at any moment. But in the long run, the consensus is that everything will just continue expanding outward. So if we want to visit other galaxies, we'd better do it soon.

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