In the heart of our Milky Way galaxy, two gigantic "bubbles" extend roughly 50,000 light-years above and below the galactic ...

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

Astronomers have taken a close-up photo of a star outside our own galaxy, the Milky Way, for the first time ... to witness a star’s life in real time," said Gerd Weigelt, an astronomy professor ...

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

But all of the stars that we have seen in detail are contained within the roughly 100,000 light-year span of our Milky Way galaxy ... witness a star’s life in real time,” said fellow ...

MILES O'BRIEN: Well, Geoff, if you could imagine a baby picture of our own galaxy, the Milky Way, this is probably what it would look like, according to scientists. This is a galaxy that is about ...

Image: CfA/Mel Weiss Astronomers have detected a mid-infrared flare from the supermassive black hole at the heart of the Milky Way galaxy for the very first time, and it’s shedding new light on ...

After 11 years in solar orbit, the European Space Agency’s Gaia spacecraft has completed its mapping of our Milky Way Galaxy to a precision ... so the picture doesn’t fully add up, he said.

High radiation during a time of frenzied star formation in the Milky Way left one stellar population with few chances to form planets, a study reports.

Our solar system resides in a galaxy called the Milky Way, stuffed with between 100 billion and 400 billion other stars, many of them with planets of their own. The Milky Way got its name from the ...

It seemed that these redshifted galaxies were all moving away from the Milky Way. Hubble’s results suggested the farther away a galaxy was, the faster it was moving away from Earth. Hubble got ...

The Andromeda galaxy helped Edwin Hubble settle a great debate in astronomy. Stocktrek Images via Getty Images ...