Recent comments in /f/space

Restless50 t1_j9rtf0d wrote

Reply to comment by Restless50 in Help! My friend is convinced that the Earth is hollow and we are living inside of it! by YeetFleekMasterOfRap

Put more thought into a response, here:

If the earth was somehow hollow and the water somehow didn’t all immediately fall straight “up” to the core when at the slowest spinning parts of the planet, I should be able to look up and see Japan, let alone the fact that all of the rock and magma should fall to the center as well due to Gravity. Even light scattering through the atmosphere wouldn’t be able to hide the fact that the horizon went ‘up’ forever

If the gravity we experience here on earth was caused by centrifugal force, you would be near weightless near the poles, as things generally only spin in one direction.

If the earth was hollow, there would be no night sky, just the twinkling lights of other cities past the glowing molten core that would serve as the sun. A fascinating setting for a sci fi novel if you managed to work around everything I mentioned (man made planet perhaps?), but ultimately not plausible.

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WULTKB90 t1_j9rsz5u wrote

Reply to Dark energy faster than speed of light? by No_Adhesiveness_6821

No, any local area of the universe isnt expanding faster than the speed of light, rather the collective growth of the entire universe results in the areas further away from you expanding more.

Thing of it as each cubic centimeter of the universe growing by a millimeter per second. The further out you go the more milimeters per second are added but each local area only grows by 1.

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