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Which makes me think that if it's so utterly non-interacting (at least when it comes to the electromagnetic force), are there yet undiscovered fundamental force
by jp555 11y ago
Which makes me think that if it's so utterly non-interacting (at least when it comes to the electromagnetic force), are there yet undiscovered fundamental forces that act on dark matter, or does it only interact with gravity? If only gravity, dark-life will be very very very large in size, given how incredibly weak gravity is.
- jerf 11y agoGravity also doesn't give you chemistry. Earth intuitions are not good to apply to the universe. Life on Earth may seem very robust and resilient, but the universe as a whole does not seem friendly to it. And yet, even things as hostile as the surface of the sun is as a verdant garden paradise for life compared to the dark matter universe, because at least on the sun, atoms interact with each other. The dark matter universe looks more like one of those universes where someone tweaked the constants so that stars and planets never form and so nothing but hydrogen ever exists. It doesn't matter how much hydrogen you pour into a universe, if that's all you have, it's not going to be alive.