e36freak92 t1_j7im7vz wrote on February 7, 2023 at 1:33 AM

Reply to comment by thuanjinkee in Rolls-Royce Nuclear Engine Could Power Quick Trips to the Moon and Mars by darthatheos

Rtgs don't put out much .energy though. Fine to run some spacecraft instruments. A house? Maybe not so much

e36freak92 t1_j1gk0sj wrote on December 24, 2022 at 4:15 AM

Reply to comment by AnnonBayBridge in Did you know it will still take 46 billion years to cross the universe at the speed of light? 65 mph = 4.8 * 10^17 years! by NotAndroid545

Yes, there are galaxies moving away from us at faster than the speed of light. The expansion of spacetime itself isn't constrained by special relativity.

Also it's expanding everywhere at once, not just the borders getting father away, which is really hard to wrap your head around