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.

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

A radio telescope in South Africa has unearthed a giant galaxy—dubbed a "cosmic megastructure"—with plasma jets that measure ...

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

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

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

Astronomers have discovered two strange objects that could be young stars — except they're completely surrounded by ice.

It has a mass more than 4 million times the mass of the sun crammed into a diameter just about 30 times the sun’s width. The Milky Way is just one of more than 100 billion galaxies in the ...

In the years following the launch of NASA's Hubble Space Telescope, astronomers have tallied over 1 trillion galaxies in the universe. But only one galaxy stands out as the most important nearby ...