I HAVE spent a certain amount of time studying the stars, at least as far as being able to identify constellations and so forth, but that’s about the extent of my cosmic journey. I could show somebody the big dipper and Orion and maybe even the Little Dipper if I’m lucky. I could point someone towards M31, where the nearest galaxy is to ours, if I recall correctly.
I’m only up to page 52 of Neil’s book “astrophysics for people in a hurry” ( which says something about the kind of “hurry“ I am in..........lol), And he continues to talk about the precisely measured temperature of microwaves. He says and I quote, “if you’re numerically lazy, nobody will fault you for rounding the temperature of the universe to 3°.“ he’s talking about CMB (Cosmic Microwave Background), But I can’t tell you that I know anymore about THAT, then I did a half an hour before I read it.
Because I’m not a scientist and I don’t fully understand, is he saying that if an astronaut was floating out in space and happened to be exposed to space, It would feel like 3°F?
Edited by Soupy1957, 11 January 2018 - 11:11 AM.