- #1
onemind
- 28
- 0
Hello,
I have a few questions for astronomers.
1) When you look up at the sky at night with the naked eye, are all those stars within the milkyway galaxy? Or can we see past our own galaxy and see stars from other galaxies mixed in with stars from the milky way?
2) I heard the universe is 78 billion light years across. What is at the edge of the universe? And what happens if you go past it? I mean, i hear a lot of people say that there is no other side and the universe is all that is. Its not like the big bang happened in a vacuum, there is nothing then it expands. But let's say we did fly out to the edge and kept going, do you just bounce off the boundary? Or is it some freaky geometry that you would end up back where you started after a while?
3) Is the sun going to burn out in 5 billion years?
Cheers
I have a few questions for astronomers.
1) When you look up at the sky at night with the naked eye, are all those stars within the milkyway galaxy? Or can we see past our own galaxy and see stars from other galaxies mixed in with stars from the milky way?
2) I heard the universe is 78 billion light years across. What is at the edge of the universe? And what happens if you go past it? I mean, i hear a lot of people say that there is no other side and the universe is all that is. Its not like the big bang happened in a vacuum, there is nothing then it expands. But let's say we did fly out to the edge and kept going, do you just bounce off the boundary? Or is it some freaky geometry that you would end up back where you started after a while?
3) Is the sun going to burn out in 5 billion years?
Cheers