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 ...

“We [will be able to] move quickly and map out very large areas of the sky,” adds Josh Schlieder, the telescope’s wide-field ...

Edwin Hubble was young and ambitious ... which captures the intensity of light from blue to red. Astronomers call a shift to longer wavelengths a redshift. It seemed that these redshifted galaxies ...

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 ...

Chris Impey, University of Arizona (THE CONVERSATION) A hundred years ago, astronomer Edwin Hubble dramatically ... of light from blue to red. Astronomers call a shift to longer wavelengths ...

The Andromeda galaxy helped Edwin Hubble settle a great debate in astronomy. Stocktrek Images via Getty Images ...

SINGAPORE – It may not always be possible to find common ground as Singapore’s society changes, said Minister for Culture, Community and Youth Edwin Tong. “But the goal should always be to ...

(THE CONVERSATION) A hundred years ago, astronomer Edwin Hubble dramatically ... which captures the intensity of light from blue to red. Astronomers call a shift to longer wavelengths a redshift.