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I wonder how such galaxies will look like in few billion years (or actually look like now) when current gen stars will burn out - everything circling quasar in
by saiya-jin 3y ago
I wonder how such galaxies will look like in few billion years (or actually look like now) when current gen stars will burn out - everything circling quasar in the center are mostly red dwarves, with some rare neutron stars and black holes sprinkled here and there.
Not much to see on visible spectrum compared to usual galaxies, other spectra will look better (but still probably quite faint).
- BurningFrog 3y agoAnd are there such invisible former galaxies out there now?
- layer8 3y agoThe observable universe probably isn’t old enough for that. If you don’t restrict “out there” to our past light cone, and/or assume the cosmological multiverse, then there certainly may be.
- aaaronic 3y agoWhy won't they see another generation of star formation when supernovae push gases into dense regions again? It seems like the stage you're talking about is more than a few billion years away (more like 10s of billions).