Dr Karl
👤 SpeakerAppearances Over Time
Podcast Appearances
Bring it up to 10 kilometres in size, still pointy, like Mount Everest.
100 kilometres, still pointy.
1,000 kilometres, not pointy anymore.
It's almost perfectly round.
So the boundary at which gravity overcomes internal structural integrity depends on the size of the body,
and what it's made of.
It's made of icy type stuff like frozen water or frozen methane or frozen carbon dioxide, 400 to 600 kilometres.
If it's made of rock, maybe 600 to 1,000 kilometres and then it becomes pretty well rounded.
And so you will see in the asteroid belt, there are some objects that are quite small and they're really bumpy.
My own planet, do you have a planet that is named after you, Dr. Sam?
One day, I'll get there.
Oh, I'm sorry.
Well, if you look at my planet... Humblebrag.
Must be nice.
Well, I can't do anything with it, so...
It's called 18412 Krushelnitsky.
Look it up.
And it's a minor planet.
It's a very tiny thing and it's about six kilometres in diameter and it's too small.