Q. With reference to the ‘S8 Tension’, consider the following statements:
1.It refers to a persistent discrepancy between the values of S8 obtained from different types of astronomical observations.
2.The Hubble tension deals with the rate of cosmic expansion while the S8 tension concerns the distribution and clustering of matter.
Which of the statements given above is/are correct?
Explanation: Both Statements are correct
Statement 1 is correct: The “S8 tension” refers to a persistent discrepancy between the values of S8 obtained from two different types of astronomical observations: Cosmic Microwave Background (CMB) Data and Large-scale Structure and Galaxy Surveys.
Statement 2 is correct: These two (mentioned above) sets of measurements do not overlap within their statistical uncertainties, meaning that if one is correct, the other is very unlikely to be correct by chance. This is similar to the well-known “Hubble tension,” but while the Hubble tension deals with the rate of cosmic expansion, the S8 tension concerns the distribution and clustering of matter.
Source: TH
Discover more from Free UPSC IAS Preparation Syllabus and Materials For Aspirants
Subscribe to get the latest posts sent to your email.
