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when I think in the somewhat distant future we will one day collide with Andromeda a sadness at the loss of life and the vitality it brings to a place on a planet.
How do you know that it's real? Take their word for it?
originally posted by: Ericthedoubter
a reply to: wildespace
The expanding Universe doesn't sit right with me.I find it puzzling that within the first few minutes of the Universe's existence,it must have expanded at considerably more than the speed of light.
Of course,the available space was also expanding at the same time,so perhaps it isn't so curious.
It would mean that the Universe wasn't expanding at more than the speed of light,rather,it was moving at the speed of existence...or potential....moving at the speed of available space.
Blast.This requires more cogitation.
originally posted by: wildespace
These kind of images speak directly to my heart and mind. This is the universe we live in, with billions of galaxies, that each have billions of stars and lots of potentially habitable (and potentially inhabited) planets. To believe that we're alone in this universe is a folly.
The Milky Way contains between 200 and 400 billion stars and at least 100 billion planets. The exact figure depends on the number of very-low-mass stars, which are hard to detect, especially at distances of more than 300 ly (90 pc) from the Sun.