The HR 8799 system harbors four super-Jupiters orbiting with periods that range from decades to centuries. We’re currently monitoring this system to understand if and how this system is dynamically stable. This footage consists of 7 images of HR 8799 taken with the Keck Telescope over 7 years. Video made by Jason Wang, data reduced by Christian Marois, and orbits were fit by Quinn Konopacky. Bruce Macintosh, Travis Barman, and Ben Zuckerman assisted in the observations.
The radius and ulna are among my favourite bones specifically because they do this
I hate this. I hate that they do this. I think about this every time I rotate my wrist. It seems like the sort of thing that would go wrong in all sorts of horrible ways and leave a bone sticking out of my skin. and yet it keeps happening. every day of my life.
I rotate my arms regularly just because I like it when they do this.
iiiiiii dont. think thats how bones work
Here are two videos on Reddit demonstrating how the radius bone rotates around the ulna bone: link / link
Yeah i doubt someone would make these gifs for the purpose of an online joke so I have no choice but to believe it
i have a degree is bones (bioarchaeology) this is how bones work and i hate it
For fellow autistic people who aren’t sure whether this is a joke: I asked my mother, who has an MD, and she said this is in fact how those bones rotate
You also can either use Google or Literally Just Feel Your Arm Where The Bones Are
Don’t want your arms to do this? Become a dinosaur
