The early 2000s marked a period of incredible growth in cosmic observations and measurement tools, leading to groundbreaking discoveries like dark matter and dark energy. General Relativity provided a solid foundation for our expanding knowledge of the cosmos, its origins, and its future evolution.
However, as our observations became more sophisticated, a small “glitch” emerged in our understanding of the universe, causing a disruption in the smooth flow of progress. Initially, it was believed that this discrepancy could be resolved with more precise calculations and measurements, but that turned out not to be the case.
This discrepancy, known as the “cosmological tension” or Hubble Tension, arises from conflicting calculations of the Hubble parameter, H0, which describes the universe’s expansion.
There are two methods to calculate the Hubble parameter:
Initially, these two methods seemed to provide very similar values for H0, suggesting a harmonious agreement. However, further analysis revealed a discrepancy that challenged our understanding of the universe.
2024-04-21 17:00:03
Link from phys.org