Shapley’s Hubble Constant

Shapley's Hubble Constant is a refined estimate of how quickly the universe is expanding, based on the work of astronomer Harlow Shapley. It measures the rate at which distant galaxies are moving away from us, which helps determine the universe’s size and age. Essentially, it tells us how fast space itself is stretching. Understanding this rate is crucial for grasping the universe’s history and future. Shapley's contributions helped improve these measurements, providing a clearer picture of cosmic expansion and shaping modern cosmology.