(June 14, 2017 at 5:05 pm)Alex K Wrote:(June 14, 2017 at 3:10 pm)Jehanne Wrote: And, of course, an object whose light is 10 billions years old is not 10 billion light years away. The Universe, even though it is 13.8 billion years old, has a radius of around 48.5 billion light years:
https://en.wikipedia.org/wiki/Observable_universe
This can't be stressed enough. Very common misconception
The Nobel laureate George Smoot, fell into this trap, during an interview with Robert Lawrence Kuhn, although, you could tell on his face the "Oh, shit" look, as the interview continued.
