One century after Edwin Hubble revealed his astonishing discovery of a cosmos beyond the Milky Way, the most precise measurements still can’t agree on how fast galaxies are moving.

This article was originally featured on The Conversation.. A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the American ...

Edwin Hubble, a renowned astronomer, revolutionized our understanding of the universe. He proved the existence of galaxies beyond the Milky Way and discovered that the universe is expanding.

His 1936 book, The Realm of the Nebulae, remains a classic. Hubble's later years saw him work at the Palomar Observatory with the powerful Hale Telescope, but he conducted little new research ...