Hello, this has been bugging me for a bit, so some clarification would be greatly appreciated. Say I'm located on a planet 30x10^8 m away. And assuming light to be 3x10^8 m/s for easy calculation, it would take light 10s to travel to Earth, where you'd be able to see me, as I was 10 seconds ago, via an incredible telescope. Is this true (regardless of redshift, which I'm still struggling to comprehend)? I apologize if this question has been asked before, but most of the questions raised are if light always travels at a constant speed, or if anything can travel faster than light. I'm not asking that, just wondering if my feeble theory holds, imagine a planet located 70 light years away with their own Hubble telescope. Would they be seeing us as we were 70 years ago, engaged in WWII? This is truly mind boggling!