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Dark energy and dark matter are separate concepts. Dark energy refers to a factor that increases the expansion of the universe, ie a cosmological constant. Dar
by crazydoggers 6y ago
Dark energy and dark matter are separate concepts. Dark energy refers to a factor that increases the expansion of the universe, ie a cosmological constant.
Dark matter on the other hand is matter we can’t detect currently, but we theorize is there from its gravitational effects.
There’s a lot of other data like galaxy rotation rates, CMB, gravitational lensing, etc that effect dark matter estimates. I’m not sure how much of the current estimate is based on larger observable universe structure, so it’s an interesting question.
- maga 6y agoI understand that, I mean the matter-energy balance in the universe at the moment accounts 5% to ordinary matter, 26% to dark matter and the rest to dark energy. Since we now assume there are less stars, hence, ordinary matter, but the galaxies are still accelerating at the same rate, doesn't that mean the dark energy accounts for more than the estimated 69%?