In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

Hubble enters the fray Edwin Hubble joined the Mount Wilson Observatory ... Indeed, there are a few people in the world even older than that, born in a time before we knew other galaxies existed.

Edwin Powell Hubble is renowned for determining that there are other galaxies in the Universe beyond the Milky Way, and for observing that the universe is expanding at a constant rate. Hubble was ...

It gets its name from UChicago alum Edwin Hubble, who was first to calculate the constant ... speed at which it is traveling away from the Earth—and thus, the Hubble constant was born. Hubble’s ...

A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the American Astronomical Society in January 1925, a paper read by one of his ...

LeMaitre, born in Belgium, was a monsignor in the Catholic ... Wilson Observatory in California, Edwin Hubble discovered that galaxies were moving away at high speeds. He was, like most people ...