How one of the world’s greatest astronomers shaped our understanding of the universe

How one of the world’s greatest astronomers shaped our understanding of the universe
This new measurement is based upon measuring the distance to red giant stars in different galaxies
Using National Science Foundation (NSF) radio telescopes, we may now have resolved an outstanding question about the cosmos
Using the power and synergy of two space telescopes, astronomers have made the most precise measurement to date of the universe’s expansion rate.