A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the American Astronomical Society ...

Hubble’s work pushed the field of astronomy forward, starting with his paper demonstrating that some objects exist outside ...

Hubble Space Telescope mapped Andromeda, revealing a chaotic history shaped by mergers. A 2.5-billion-pixel mosaic shows 200 ...

A century ago, Edwin Hubble unveiled a groundbreaking discovery that revolutionized humanity’s understanding of the cosmos.

The full image includes some 2.5 billion pixels compiled from observations spanning more than 1,000 orbits around Earth ...

Pinpointing a Milepost Marker Star that Opened the Realm of Galaxies At the dawn of the 20th century, astronomers faced a ...

"It looks like it has been through some kind of event that caused it to form a lot of stars and then just shut down” ...

The magnificent Andromeda galaxy (Messier 31), stands out as the most important nearby stellar island to our Milky Way, and can be seen with the naked eye on a clear autumn night as “a faint ...

Controversial new findings have reignited the longstanding cosmological quarrel involving what astronomers call the "Hubble ...

Hubble revealed a universe of galaxies that existed beyond ours — but he couldn't have done it without a little help.

For humans, the most important star in the universe is our Sun. The second-most important star is nestled inside the ...

In calculating the size of the visible universe, astronomers including Edwin Hubble and Georges Lemaître discovered that light from distant galaxies was redshifted, with an increase in wavelength ...