Hubble Space Telescope mapped Andromeda, revealing a chaotic history shaped by mergers. A 2.5-billion-pixel mosaic shows 200 ...

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

Astronomers think that the motion of the material around the ... These density waves are thought to cause the spiral nature ...

But astronomers scrutinizing this particular Hubble image found the central galaxy actually sports a swirl of spiral arms seemingly unruffled by any such merger, raising new questions about what might ...

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

This rare quasar with spiral arms could help astronomers understand how supermassive black holes feed and grow.

Our Milky Way is a spiral galaxy rotating around a central point. Our Sun is on one of the spiral arms as shown in the diagram: The Sun's orbital speed is determined almost entirely by the ...

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