Scientists propose the universe's rotation to solve Hubble tension
Does the universe rotate? This theory could be the key to resolving the Hubble tension problem, one of the biggest challenges in modern cosmology.
Scientists from Hungary and the USA have proposed a model suggesting that the entire universe might be rotating. This concept could address the issue known as the Hubble tension, which involves discrepancies in measurements of the universe's expansion rate. According to Science Alert, the discrepancy between two different methods of measuring the universe's expansion rate is one of the greatest mysteries of the cosmos.
The universe's rotation as a solution to the puzzle
The research team, including István Szapudi from the University of Hawaii, discovered that incorporating rotation into the universe's model might resolve this issue without contradicting current astronomical observations. According to calculations, the universe could take trillions of years to complete a full rotation, consistent with the maximum possible speed.
A rotating universe could explain why galaxies generally spin in the same direction. This is the first application of this idea to the Hubble tension. Solving this problem is crucial for understanding the cosmos, as it influences calculations concerning the age and size of the universe and dark energy.
The Hubble tension arises from differences in measurements of the Hubble constant. One method relies on signals from the early universe, such as cosmic microwave background radiation, giving a result of approximately 42 miles/s/Mpc. Another method, based on "standard candles" in the local universe, indicates about 45 miles/s/Mpc.
What drives the movement of the universe?
If the universe is indeed rotating, it raises questions about the forces that could cause this. One hypothesis suggests that our universe is at the center of a black hole in another universe. The next step for researchers is to create a complete computer model to help verify this theory.
