Comparison of Different Hubble Constant Measurements Approach

As a matter of fact, the Hubble constant is a fundamental parameter describing the universe's expansion rate as well as the relationship between celestial object distances and redshifts. In reality, precisely measuring is crucial for understanding the universe's evolution, age, and its fundamental components. The Hubble constant's value is determined through diverse methods including pulsating stars, supernovae, and cosmic microwave background radiation. However, these approaches have yielded conflicting results, resulting in the Hubble constant tension. With this in mind, this study first introduces two commonly used measurement methods of Hubble constant, including distance ladder and CMB, and then compares the observation data obtained by combining these two observation methods, that is, comparing the results obtained by different measurement methods of Hubble constant. Different results were obtained. At the same time, this phenomenon was analyzed, the possible reasons were obtained, and the future development of this field was summarized and prospected.