Observations of the light from distant supernovae suggest that the universe is expanding. Better to say its expansion is accelerating. That means some unknown force, it is known as dark energy, is in operation over cosmological scales.
Physicists best guess for the source of dark energy was the energy fluctuations in the ‘vacuum’ of empty space, but their calculations told them otherwise. When they did the sums, the theory gave a value for the accelerated expansion that was unpredictably too big.
This acceleration of universe is actually caused by an undiscovered force that acts through the vacuum. Physicists don’t have much clue where the force might come from; they do at least have a name for it: Quintessence.
Indian philosophy authenticates it as Byom, that means the space with full of energy, Shaktipurna Shunyata. It is one of the five primary elements such as Earth-Water-Fire-Air and the Byom. Its characteristic is integrated with sound obviously.
