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

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

The plasma jets of this cosmic giant span 3.3 million light-years from end to end - over 32 times the size of the Milky Way ...

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

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

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

The result of the spacecraft’s endeavors is nothing less than the largest, most precise map of our galaxy to ... black hole in the Milky Way, just 2,000 light-years from Earth.

The Lagrange L2 point is a position in space where the gravitational forces of the Earth and the Sun ... history and structure of our galaxy. The mission has enabled the creation of the most detailed ...

"What If is an epic exploration of possibilities. What If is a Webby Award-winning science web series that takes you on a journey through hypothetical worlds and possibilities, some in distant corners ...

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