Made possible by measurements of nebular apparent radial velocities, when first established, it implied that the Milky Way was larger than almost all other galaxies.
Allan Sandrage used pulsating Cepheid variables and supernovae to determine it, and at a given time, it is the same everywhere in the universe. Made possible by measurements of nebular apparent radial velocities, when first established, it implied that the Milky Way was larger than almost all other galaxies. Representing the ratio between a galaxy's velocity and distance and approximately one over the age of the universe, FTP, identify this constant named for a 20th century American astronomer.
Allan Sandrage used pulsating Cepheid variables and supernovae to determine it, and at a given time, it is the same everywhere in the universe.
{Hubble} constant