On May 8, 3:25*pm, liketofindoutwhy
wrote:
On May 8, 12:52 pm, wrote:

Everything is not relative but the speed of light in vacuo is the one
constant in the universe.

Mitch Raemsch

everything is not relative? *is that right -- is that what relativity
is really is? *I thought even in Newton's physics, speed is relative,
so maybe Einstein's theory is different in this regard? *When we say
"something approaches the speed of light", is that absolute speed or
relative to the observer?

Motion through space is absolute.