They say that when we look up to see stars, we’re actually seeing the light from dead stars. So technically, we can’t see what’s out there in the present? What do you think is out there now? is it just new, modern stars or we don’t get to see anything at all? (since by now, everything has expanded billions of miles apart from each other that light is far from anything to reach)
In: Planetary Science
Some of the light is only tens of years old. many more stars we see as they were hundred of years ago. All of the stars you can see as separate points of light with your un-aided eyes are maybe a few hundred thousand years old, within our local galaxy. We can see other galaxies that are millions of light-years away, but they are mainly just fuzzy blurs in the night sky. The vast majority of all these stars that we can see, in our local and nearby galaxies, are still there now.
When astronomers look at the deep sky, up to billions of light-years away, they see ancient galaxies containing stars that may well have mostly exploded into novas or burned out into dwarfs since then, but there are always new stars being formed from the dust and debris of other stars. So we’d expect new stars to still be there, if we could jump there (or where they’ve moved to) today.
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