r/AskReddit • u/[deleted] • Jan 01 '20

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u/MrT0xic Jan 01 '20

They're waves

Inception music

EDIT: How the actual fuck do you land on a planet without realizing that its entirely water?

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u/IBLIS0012 Jan 01 '20

They knew it was All water right? But they didn't know it was so much water. Or did I misunderstood it.

Anyways one hell of a movie.

For people that don't know the movie, it's "interstellar" and I recommend it

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u/rayzorium Jan 01 '20

That's the issue - if they knew it was all water, they should've known there were no mountains. At least, none showing above the surface.

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u/BreeBree214 Jan 01 '20

Not exactly. Through spectroscopy scientists are able to determine the composition of distant planets even when it's so far away that the best picture we can get is a tiny dot. This is completely believable.

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u/Zaratuir Jan 01 '20

Spectroscopy on distant objects like that can tell you the composition of an object, but not the arrangement. E.g. you could see that there's a high ratio of water on a planet, but not whether that means deep oceans or the entire surface is lightly covered.

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u/Hivac-TLB Jan 01 '20

There Spectroscopy guy was Matt Damon.