What if the Sun Disappeared? 🌞

#shorts What would happen if the sun, one day, just disappeared? Watch until the end to see what would happen.

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Image credits: Universe Sandbox

#sciencefacts #vanishingsun #Astrum

[Amigafur]

I mean, that's actually exactly what I expected.

[stephencorsaro]

If the sun just disappeared we'd know we were in a simulation with poorly written code.

[ambergrace]

The the harder you work to not get pulled in the faster you go....tripped me out 💀

[DraaelD]

I'd love to see more on this type of simulated scenarios. Wow. How would it affect our gravitational waves? How much velocity would that release generate and the pressure we'd experience?

[hrayz]

Remember that gravity goes at the speed of light too. So the inner planets lose orbit in order of distance, closest first.
The planets keep orbit for a while (minutes or hours) until gravity catches up.

[louisr]

What I always wondered is if the sun "suddenly" (instantaneously) disapeared, wpuld that gravitational change travel with light speed? Would it take some time until the outer solar system would feel the effect?

[rev]

Nope, that's exactly what I expected would happen, but still cool to see visually represented.

[ktina]

That actually surprised me, too, about the inner planets basically catapulting out into space first. Interesting lesson on planetary cosmology. Thanks!! (:

[Chris-befo]

My last thought would be; dam, the solar system must have been programmed by Microsoft and some IT guy has failed to download the bug patch.

[Miftahul_]

If we take the centripetal force mv^2/r and equal it to GMm/r^2 approximately (assuming all other forces are negligible) you will see that GM/r=v^2, where G is the universal gravitational constant, and M is the mass of the Sun, which is basically constant. As you get closer to the Sun, your radius (r) gets smaller. Since r is on the denominator, decreasing r increases the value of the fraction. Therefore v^2 is greater if r is reduced, so v is greater when r is reduced. There’s your explanation that I think is correct, feel free to correct me if I’m wrong :) I would also like to add that if the Sun were to disappear, gravitational waves would only travel at the speed of light. So it would take 8 and a half minutes before the Earth gets catapulted whereas Neptune, for example, would take around 4 hours before it becomes ejected.

[EighthRobin]

I've just finished reading the book Galaxias! The Sun fortunately disappeared for a day but had massive knock on effects. A good read.

[Hydra]

Um maybe I just took too many physics classes but that's not surprising... that's common knowledge as far as I know

[random.studios]

It turns out this is exaclty what I expected.

[MinhTruong-cjip]

Would the disappearance of the Sun's gravity not reach earth for 7 minutes? Meaning, the earth would still orbit for 7 minutes before going straight?

[ravenlord]

What would happen to the moon? Would it stay stable around Earth, get flung off, or spiral into us?

[EASYTIGER]

As others have said, while I'm no astro-physicist, the animation is what I'd expect to happen. I'm intrigued what Astrum expected to happen!

[captainandthelady]

The sun disappears and along with it light AND gravity. It would make sense that the first planets to loose light and gravity would be the inner planets as both travel at the same speed.

[AndrewDRSWilliamson]

Time go split! See you guys!! Awsome.
Love you astrum.
Your voice is soothing in a troubling 🌎 world.

[mountainhobo]

Getting through the asteroid belt would be a lot of fun.

[wyvolf]

Super fun doing this in Universe Sandbox 2,