Mass Density of Vacuum

Mass of vacuum?
- Varun (age 15)
India

So far as we can tell from the accelerating expansion of the universe, the mass density of the vacuum is about 6.5*10^-27 kg/m³.  If, however, some other effect is causing that acceleration, then we don't know the answer.

Mike W.                                                                                                                                               

(published on 05/03/2013)