Yet, a century ago, its discovery by Edwin Hubble, then an astronomer at Carnegie Observatories, opened humanity's eyes as to how large the universe really is, and revealed that our Milky Way ...

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 ...

Edwin Powell Hubble is renowned for determining that ... In 1924, he announced the discovery of a Cepheid, or variable star, in the Andromeda Nebulae. Since the work of Henrietta Leavitt had ...

Edwin Hubble set out to answer this cosmic riddle ... may flip our planet 'Fuel-free space travel': NASA engineer claims discovery that defies physics ...

Hubble and its fellow observatories give us an unprecedented, crystal-clear look at the far reaches of the cosmos. Explore these orbiting pioneers and learn what they've discovered. 3 min read The ...

A discovery made by a team led by researchers at the University of Michigan tugs at the seams of some key cosmic lessons we ...

American astronomer Edwin Hubble was the one who made the discovery, and it put him onto greater things. In 1919, Hubble began working at Mount Wilson and used the 100-inch Hooker telescope ...

The Hubble constant is one of the most important numbers in cosmology because it tells us how fast the universe is expanding, which can be used to determine the age of the universe and its history. It ...

Edwin Hubble was young and ambitious ... or apparent size is not a good guide to its distance. Hubble leveraged a discovery made by Henrietta Swan Leavitt 10 years earlier. She worked at the ...

In commemoration of Edwin Hubble's discovery of a Cepheid variable class star, called V1, in the neighboring Andromeda galaxy 100 years ago, astronomers partnered with the American Association of ...