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 ...

Curtis argued that the spiral nebulas were galaxies in their own right, but said that the Milky Way was only 10,000 light years across. Shapley argued the opposite. Hubble enters the fray Edwin ...

Edwin Hubble was young and ambitious ... His measurements marked the end of the Great Debate about the Milky Way’s size and the nature of the nebulae. Hubble wrote about his discovery to ...

In the study published in The Astrophysical Journal, Hubble reveals a markedly different ecosystem from the smaller number of satellite galaxies that circle our Milky Way. This offers forensic ...

scientists primarily observed dwarf galaxies near the Milky Way, but they were never sure whether those were representative of others in the universe. That's why they pointed Hubble, which orbits ...

American astronomer Edwin Hubble was the one who made the discovery ... made it clear that Andromeda lies far beyond our own Milky Way, thus proving that it had to be another galaxy.

A century ago, Edwin Hubble revealed that the "spiral nebula" was not part of our Milky Way but located 2.5 million light-years away, about 25 times the Milky Way's diameter. Before this discovery ...

is two and a half times the size of our Milky Way and ... [+] has nine rings — six more than any other known galaxy. High-resolution imagery from NASA’s Hubble Space Telescope confirmed eight ...

Hubble makes his mark Edwin Hubble was young and ambitious ... His measurements marked the end of the Great Debate about the Milky Way’s size and the nature of the nebulae.