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

In the 1920s, astronomers thought that the Milky Way was the entire universe. Hubble's discovery revealed a much bigger ...

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

Astronomers have discovered an extraordinary new giant radio galaxy with plasma jets 32 times the size of our Milky Way. Measuring 3.3 million light-years from end-to-end, the cosmic megastructure ...

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

Seen in polarised light for the first time, the image above is of Sagittarius A*, the supermassive black hole at the center of the Milky Way ... said Issaoun. Size comparison of the two black ...

Subsequent advances revealed first the size of the Solar System, then the distances to the nearest stars and an approximate scale for the Milky Way. Well before Hubble, some people had proposed ...