How would you like to see the farthest thing visible to the naked eye? It’s possible, but you’ll need to bundle up and sit ...

How would you like to see the farthest thing visible to the naked eye? It’s possible, but you’ll need to bundle up and sit ...

What we now know as the Andromeda Galaxy was then considered to be just a big cloud of nebulosity. That all changed in the 1920s when Edwin Hubble and his assistant Henrietta Leavitt discovered ...

A century ago this month, a brash astronomer leaked a discovery that opened our view to the cosmic distance scale and the ...

This is not carelessness, but the possible discovery of a rare stellar event in the Andromeda galaxy. A red supergiant star ...

Curtis’ galaxy was just 10,000 light-years ... Fast forward to four years later, October 5/6, 1923. Hubble was reviewing plates he’d taken of Andromeda (M31) with the 100-inch reflector ...

This sweeping bird's-eye view of a portion of the Andromeda galaxy (M31) is the sharpest image ever taken of our galactic next-door neighbor. Disclaimer: AAAS and EurekAlert! are not responsible ...

NGC 261 blooms a brilliant ruby red against a myriad of stars in this new image from NASA’s Hubble Space Telescope. A Strange Ring Galaxy| Is this one galaxy or two?. This image, captured by the ...

Using variable stars as distance markers and the giant telescope on Mount Wilson, Edwin Hubble (then a young ... have measured the distance to the Andromeda Galaxy much more precisely; they ...