If two ships are travelling side be side at some major fraction of the speed of light (e.g. 90%) and are, say, 100 yards apart, would they be able to see each other out the portholes?

Great question, and you see, that’s what we mean when we say everything is relative. Your “speed” is always relative to something else. If you don’t compare it to something else, you might as well be standing still. Relative to you, the other spaceship is standing still. You are both just floating there while Earth quickly moves... Continue Reading →

If a tennis ball flies at 99% of light speed, will it be in every location of its trajectory, or will it skip some on its way?

The tennis ball will not appear in every location of it’s trajectory nor will it skip some on it’s way. It will look to us that time on the tennis ball has slowed down. Time and space are relative. What this means to your question is simply the speed of the tennis ball must be... Continue Reading →

Create a website or blog at WordPress.com

Up ↑

%d bloggers like this: