By virtual-particle quantum mechanics, space contains very high vacuum energy. If so, universe has very high curvature. By virtual-particle quantum mechanics, cosmological constant is 120 orders of magnitude greater than cosmological constant that balances gravity, but observations show that space has zero curvature {cosmological constant problem}. Perhaps, space has negative pressure to counterbalance vacuum energy. Perhaps, constant negative dark energy counterbalances vacuum energy.
Physical Sciences>Astronomy>Universe>Cosmology>Energy
5-Astronomy-Universe-Cosmology-Energy
Outline of Knowledge Database Home Page
Description of Outline of Knowledge Database
Date Modified: 2022.0224