Videohubble constant

The hubble constant is one of the most significant numbers in cosmology, representing the current rate at which our universe is expanding. This lesson explains how this parameter relates a galaxy's distance to its recession speed and why it is technically the present-day value of the broader Hubble parameter. You will explore essential concepts like Hubble's law, the calculation of Hubble time to estimate the age of the universe, and the mysterious Hubble tension that challenges our understanding of physics. Watch this lesson to master the terminology used by astronomers to describe the scale and growth of the cosmos.