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This made me think "wow, maybe the universe isn't so big after all", and then I remembered there are somewhere between 200 billion and 2 trillion other galaxies
by chrisfosterelli 2y ago
This made me think "wow, maybe the universe isn't so big after all", and then I remembered there are somewhere between 200 billion and 2 trillion other galaxies out there.
- deleted 2y ago[deleted]
- dustingetz 2y agoa billion billion stars is the same order of magnitude scale as a billion billion seconds, which is about the age of the universe. Or, a billionth billionth second (one attosecind), which is the amount of time it takes for an electron to change orbitals, and also the speed of light across the diameter of a Hydrogen atom.
- Prbeek 2y ago"which is about the age of the universe" The more I think about the big bang the more it doesn't make sense because it would mean that the universe came out of nothing.
- mr_mitm 2y ago100 billion is the only number in cosmology you need to remember: stars in the milky way, galaxies in the observable universe, and age of the universe (in dog years).
- bufferoverflow 2y agoNo. The estimated number of galaxies in the observable universe is between 200 billion and 2 trillion. https://en.wikipedia.org/wiki/Galaxy https://en.wikipedia.org/wiki/Galaxy The number of stars in our galaxy is estimated between 100 and 400 billion. https://en.wikipedia.org/wiki/Milky_Way https://en.wikipedia.org/wiki/Milky_Way
- 3eb7988a1663 2y agoWhat's an order of magnitude between friends?
- saagarjha 2y agoClearly you’re not a cosmologist if you care about digits of accuracy ;)
- HPsquared 2y agoOr 10^10, close enough
- csomar 2y agoThat's the "observable" universe. We don't know exactly how big the universe is and whether it has a limited size in the first place.