this post was submitted on 11 Aug 2024
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[–] jlow@beehaw.org 35 points 3 months ago (3 children)

This sounds like a job for https://what-if.xkcd.com/

Is there enough obsidian on this planet? Would its weight crush the earth's crust? How would we construct it?

[–] Scrappy@feddit.nl 28 points 3 months ago

Constructing it is easy, just get a couple hundredthousand buckets of water and lava and bob's your uncle

[–] ChaoticNeutralCzech@feddit.org 22 points 3 months ago* (last edited 3 months ago)

Well, the chapter 54: Snowball in Randall's book What If? 2 contains the following, semi-related graphic:

(Maximum diameters of spheres of various materials before collapsing under their weight, which is about the same as the material's free-hanging length)

[–] LostXOR@fedia.io 9 points 3 months ago

I think the answers are yes, somewhat (in addition to collapsing under its own weight), and probably impossible.