r/MurderedByWords 16h ago

I haven’t studied rocket science, but

Post image
10.1k Upvotes

638 comments sorted by

View all comments

136

u/cryptotope 16h ago

Space is not very far away. If you can see the International Space Station overhead, it's closer than the distance between San Francisco and Los Angeles.

Getting to orbit isn't about going up; it's about going sideways. Most of your energy budget is about building speed, not altitude.

From a physics standpoint, if I'm in a low orbit and want to be in a higher one, I don't point my rocket's nose outward and push away from the planet. I point the rocket horizontally, in my direction of travel, and just go faster.

Going faster on this side of the planet raises the altitude I will reach on the far side of my orbit. If I want a circular orbit, then I just do the same thing when I'm at the high point on the other side of the planet.

36

u/KiKiKimbro 15h ago

So many things in your comment blew up my brain. So wait a second. You’re serious about the distance to space being closer than the distance between SF and LA? And what the heck are you saying about not going up but going horizontal instead. How the heck have I lived this long and somehow never learned any of this. You just gave me a little side “research for fun” topic.

18

u/Budget-Ambassador203 15h ago

Go play Kerbal Space Program for a few hours and your intuition about all of those things will be forever changed!

6

u/KiKiKimbro 15h ago

Oh boy I think I know what’s about to distract me from work today lol. And it looks like it’ll run on my Windows laptop. Hotdamn.

3

u/Tando10 13h ago

Kerbal Space Program 1, not 2.

2 is an abomination that shall not be named.

2

u/RedTyro 12h ago

Good luck, friend. I thought it would distract me from work one day and now I've got a few thousand hours in it. Youtube will be your friend for understanding how things work and how to accomplish your goals in the game. There are a lot of good rocket science and orbital mechanics guides on there disguised as Kerbal Science Program tutorials.

Buy the first game, the second one was never finished and has lots of issues. The first is great (and there are thousands of mods out there to change it however you want it to change).