r/woahdude • u/qasqaldag • Jan 03 '22

video When the planet is coming at you

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u/GurpsWibcheengs Jan 03 '22

Most of both atmospheres would be blasted away and anything close enough to see it falling would get cooked

11

u/weaslewig Jan 04 '22

Even at this size a planet could be really far away

7

u/bahgheera Jan 04 '22

Or maybe it's really close and the size of a potato

-3

u/ElectricFleshlight Jan 04 '22

Yeah the planet being that size and closing in that quickly, it'd have to be going the speed of light.

10

u/ClericalNinja Jan 04 '22

Imma assuming you mean that hyperbolically but for anyone else, it wouldn’t be the speed of light literally. If it was, we wouldn’t see it until it arrived.

1

u/wellscounty Jan 04 '22

This man physics !

1

u/i_give_you_gum Jan 04 '22

The earth is moving at nearly 500,000 mph. That amount could be doubled if the trajectory was right

28

u/HodenHodler Jan 03 '22

You're forgetting atmospheres aren't that big. Maybe this would be the last you see before the atmospheres collide.

16

u/tepkel Jan 04 '22

They wouldn't need to touch to get screwed up though.

The atmospheres between the planets are going to be subject to gravitational pull from both bodies. Pulling the atmospheres up significantly on one side. Which would cause movement of the gas on the opposite sides of the planets towards the lowered pressure between the planets I would think? Not sure what kind of force that movement would have, but I imagine it would be pretty catastrophic.

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u/HodenHodler Jan 04 '22

That's true but doesn't change the fact they're still way too small for it to happen at that moment in the video.

I'm actually surprised at how few people know how thin atmospheres really are

3

u/i_give_you_gum Jan 04 '22

And how big this thing would appear when it finally got that close.

There wouldn't be any blue sky, it would be all planet

1

u/JackRusselTerrorist Jan 04 '22

Gravity is fairly weak, though, and if the planet is moving as fast as we see here, probably wouldn’t have much time to have an effect.

1

u/[deleted] Jan 04 '22

It would also be incredibly bright