randomnickname99
randomnickname99 t1_j27r5e7 wrote
Reply to comment by Narwhal_Assassin in How fast does the Milky Way spin? How far does Earth move through space in a year? by Sabre-Tooth-Monkey
Let's say I have two guns that shoot bullets at the speed of light. I simultaneously shoot one to my right and one to my left. If I follow correctly, I can look left or right and see a bullet moving away at the speed of light. But if the bullets looked at each other they would only see themselves moving apart at the speed of light.
Here's the part I never understood though. Let's say I was standing directly between two walls that were 600,000 km apart. When I shoot the guns I should be able to see each bullet travel for one second before hitting the wall. But from the bullet's perspective that's impossible, because they would have had to travel apart at 2c to do so. How is that reconciled?
randomnickname99 t1_j0gs5ck wrote
I bet he was muy embarazado by the whole thing
randomnickname99 t1_iy8uugn wrote
Reply to comment by J_Dom_Squad in Iran threatened families of national soccer team, according to security source | CNN by PandaReal_1234
Oh shit they're playing the US? Damn that'd be crazy if they blatantly threw the game. Like just sit down in the middle of the field and refuse to do anything.
randomnickname99 t1_iy5x4lx wrote
Reply to comment by maj_minor in Mauna Loa eruption 24-hour time lapse from USGS webcam (wait for 00:01:00) by Baconaise
I think it's the caldera.
randomnickname99 t1_iv12qnc wrote
Reply to comment by JDPowaHammer in Author reminds Americans that Samuel Adams was a revolutionary before he was a beer by DaveOJ12
Mmmmm, mmmmm, bitch!
randomnickname99 t1_j29cbvv wrote
Reply to comment by echohack in How fast does the Milky Way spin? How far does Earth move through space in a year? by Sabre-Tooth-Monkey
Whoa, that's exactly what I was looking for. Thanks! I didn't realize the order of events could change like that.
The space time diagrams in the link also make it a lot easier to follow.