this post was submitted on 08 Sep 2023
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Planets and stars and galaxies are there. You can see them because they're right over there. Like, the moon is a big fucking rock flying around the earth. Jupiter is even bigger. I see it through a telescope and think "wow that's pretty," but every once in a while I let it hit me that I'm looking at an unimaginably large ball of gas, and it's, like, over there. Same as the building across the street, just a bit farther.
The stars, too. Bit farther than Jupiter, even, but they're right there. I can point at one and say "look at that pretty star" and right now, a long distance away, it's just a giant ball of plasma and our sun is just another point of light in its sky. And then I think about if there's life around those stars, and if our star captivates Albireoans the same way their star captivates me.
And then I think about those distant galaxies, the ones we send multi-billion dollar telescopes up to space to take pictures of. It's over there too, just a bit farther than any of the balls of plasma visible to our eyes. Do the people living in those galaxies point their telescopes at us and marvel at how distant we are? Do they point their telescopes in the opposite direction and see galaxies another universe away from us? Are there infinite distant galaxies?
Anyway I should get back to work so I can make rent this month
If I point my finger at one of those galaxies, there's more gas and shit between us within a hundred miles of me than there is in the rest of the space between us combined
What's even more fascinating is that most of the stars we see in the sky are afterimages of primitive stars that died out long ago yet they shine as bright as the stars alive today
That doesn't seem right. The galaxy is only 100,000 light years across (give or take) and the life span of stars is measured in billions of years.
Most of the stars we see are in our galaxy, so at most, we are seeing them as they were 100,000 years ago, which means that the vast majority of them will still be around, and looking much the same as they did 100,000 years ago.
I seem to have made a mistake then. Thank you for correcting it.
Thinking about it further, if we're talking about stars that we can see with telescopes, Hubble, James Webb etc, then you're on the money. Stars in remote galaxies far outnumber the ones in our galaxy and show us glimpses of the early stages of the universe. And many of those stars are long gone
Not too sure where you got that number from. From what I can find, the radius of the observable universe is estimated to be about 46.5 billion light-years.
Edit: I see now that you are talking Galaxy. That's different.
The original comment was about stars we can see in the sky, so I was assuming naked eye