Dark Energy Bubbles Could Explain Why The Universe Is Expanding So Fast

We’re still not sure exactly what dark energy is, but it may have played a key role in the early universe.
Physicists can’t see or measure dark energy (hence the name). The only clue that it exists is how it affects the rest of the universe; dark energy is the force that’s driving the universe to keep expanding faster. Physicists Florian Niedermann of Stockholm University and Martin Sloth of the University of Southern Denmark propose that if dark energy formed bubbles in the dark plasma of the early universe, it could solve one of the biggest mysteries in modern physics.
They describe their idea in a recent paper in the journal Physics Letters B.
What’s New – Physicists have two very reliable ways to measure how fast the universe is expanding, also called the Hubble Constant. They can measure how fast supernovae and galaxies move away from us at different distances, or they can examine the cosmic background radiation left over from the Big Bang. The problem is that these two methods give two different Hubble Constants. But the Hubble Constant is a lot like The Highlander’s Immortals: There can be only one.
The resulting dilemma is called the Hubble tension, and Niedermann and Sloth say they may have found a way to fix it. In computer simulations of the universe, the physicists were able to get the same Hubble Constant from both methods — if a new type of dark energy existed and if it created bubbles in the very early universe.
Dark Energy Bubbles Could Explain Why The Universe Is Expanding So Fast