We can judge the value of any scientific endeavour based on how much of our knowledge it overturns or transforms.

ESA’s decade-long Milky Way Gaia mapping mission still has tons of data to release over the next few years. Expect surprises.

In the meantime, there remains a chance to glimpse Gaia through a small telescope before its final retirement. Uwe Lammers, ...

Giant radio galaxies are cosmic megastructures that can span millions of light-years, making them some of the largest-known ...

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

Astronomers have discovered an extraordinary new giant radio galaxy with plasma jets 32 times the size of our Milky Way.

Astronomers have discovered a giant radio galaxy with plasma jets stretching an incredible 3.3 million light-years—32 times ...

This information includes stellar movements, luminosities, temperatures, and compositions, allowing scientists to reconstruct the history and structure of our galaxy. The mission has enabled the ...

The Hubble Space Telescope completes a high-resolution portrait of our galaxy's gorgeous neighbor, which will help scientists better understand our Milky Way.

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

Exoplanets have captured the imagination of the public and scientists alike and as the search continues for more, researchers ...

Recent studies challenge the long-held belief that the Milky Way is a standard model for understanding galaxy formation, ...