13 votes
Accepted

Two halfs planet possible

Sorry, but no. It would be absolutely impossible without magic. If such situation somehow developed, it would only last for a moment. Then, without magic, the halves would be in high-friction contact ...
Jani Miettinen's user avatar
5 votes

Does planet size affect mountain formation?

Here's one of Willk's answers on what a 30-kilometer-tall mountain would look like. The equation in it is somewhat mangled but the gist of it is that mountain height directly depends on planetary ...
KEY_ABRADE's user avatar
  • 12.8k
3 votes

Two halfs planet possible

Exactly half of this idea is doable: one half of the crust & core rotating against the planetary rotation As the other answer explains, having the entire half of the planet rotating the wrong ...
SPavel's user avatar
  • 7,771
2 votes

Does planet size affect mountain formation?

Yes The higher the gravity on a planet, the closer its surface will come to being "smooth". As has been commented, there are lots of answers about "biggest possible mountain" on ...
jdunlop's user avatar
  • 31.3k
2 votes

What conditions would be required to create several deep creeks in the same area?

What you're basically looking for is an area where a seabed accumulated a thick layer of limestone, and was then raised well above sea level by tectonic uplift. The most likely scenario here is a ...
Shawn O'Neil's user avatar
  • 1,913
1 vote

What conditions would be required to create several deep creeks in the same area?

Frame challenge. The Bolton Strid is an unusual formation. Water travels as a river, then drops dramatically through caves, then re-emerges much lower down. There are a few strips like this but they ...
Richard Kirk's user avatar
  • 7,635
1 vote

What conditions would be required to create several deep creeks in the same area?

I would expect that a fast flow of water would normally carve a V shaped cut into the bed into which it moves, as we were taught in geography lessons since primary school. The only way around it which ...
L.Dutch's user avatar
  • 283k

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