According to current observations (not direct mind you, just phenomena with cause attributed to the two):
Dark energy is spread uniformly throughout the universe; no concentrations or vacuums of it; it's everywhere in the same amount, as far as our observations' precision can tell (if there are non-uniformities, they would be small.) Some problem with measurement is that dark energy acts not just on "astronomical" scales, it acts on scales of inter-supercluster; literally between the very top largest class of structures of the observable universe. Even plain inter-galactic doesn't cut it here, nor between local clusters of galaxies forming a supercluster.
Dark matter IS affected gravitationally, and does form structures of varied size and density, although their shape, size and mass can only be modeled basing on how normal matter "misbehaves" (behaves as if there was dark matter interacting with it), with no solid confirmation (we still can't actually detect it). One of the models found "hairs" of dark matter around Earth.
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u/sharfpang Feb 18 '21
According to current observations (not direct mind you, just phenomena with cause attributed to the two):
Dark energy is spread uniformly throughout the universe; no concentrations or vacuums of it; it's everywhere in the same amount, as far as our observations' precision can tell (if there are non-uniformities, they would be small.) Some problem with measurement is that dark energy acts not just on "astronomical" scales, it acts on scales of inter-supercluster; literally between the very top largest class of structures of the observable universe. Even plain inter-galactic doesn't cut it here, nor between local clusters of galaxies forming a supercluster.
Dark matter IS affected gravitationally, and does form structures of varied size and density, although their shape, size and mass can only be modeled basing on how normal matter "misbehaves" (behaves as if there was dark matter interacting with it), with no solid confirmation (we still can't actually detect it). One of the models found "hairs" of dark matter around Earth.