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Catfish · 04-28-15, 02:23 AM

^
Ok let's say a spacecraft would be able to reach 1/2 of the speed of light, or maybe a bit more. Lots of reaction mass or a buzzard ram drive required, but theoretically possible.

Now you have two of them, and let them start in opposite directions ..

When each reaches 1/2 c, one is travelling at the speed of light, relatively to the other.
Not relatively to the starting point, of course, but ..

04-28-15, 02:23 AM	#9
Catfish Dipped Squirrel Operative Join Date: Sep 2001 Location: ..where the ocean meets the sky Posts: 17,767 Downloads: 38 Uploads: 0	^ Ok let's say a spacecraft would be able to reach 1/2 of the speed of light, or maybe a bit more. Lots of reaction mass or a buzzard ram drive required, but theoretically possible. Now you have two of them, and let them start in opposite directions .. When each reaches 1/2 c, one is travelling at the speed of light, relatively to the other. Not relatively to the starting point, of course, but .. __________________ >^..^<*)))>{ All generalizations are wrong.