What is the present range of measured values of Hubble's constant from various techniques?
A) somewhere between 200 and 1000 km/s Mpc
B) somewhere between 67 and 75 km/s per Mpc
C) somewhere between 80 and 300 km/s per Mpc
D) between 28 and 32 km/s per Mpc

Question

Quizplus · Accepted Answer

The current range of measured values of Hubble's constant from various techniques is somewhere between 67 and 75 km/s per Mpc. This range reflects the discrepancy between measurements obtained from the cosmic microwave background (Planck mission) and those obtained from local measurements (such as supernovae and Cepheid variable stars).

What Is the Present Range of Measured Values of Hubble's