Realm of the Nebulae

In less than a century, the accepted picture of the universe transformed from a stagnant place, composed entirely of our own Milky Way galaxy, to a realm inhabited by billions of individual galaxies, hurtling away from one another. We must thank, in pa

Edwin Hubble spent most of his illustrious career at the Mount Wilson Observatory, in Pasadena, California. Robert P. Kirshner is Clowes Professor of Science at Harvard University. Sean M. Carroll is Senior Research Associate at the California Institute of Technology.