A retired Tucson heart doctor won a national amateur astronomy award for helping University of Arizona scientists detect some of the faintest and most confounding galaxies in the universe.

Being able to make out shades and even areas and craters with the naked eye is enthralling to kids ... for a galaxy and what better than the closest and coolest one to our own Milky Way ...

A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of 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 will collide with the Milky Way, resulting in a spectacular cosmic collision! Don’t worry, though – the distances between stars are vast, so we won’t feel a thing.

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 never before achieved. Surviving solar radiation and ...

Physicist Crespo, through his Quantum Fracture account, recently explained that the Sun could change galaxies: "Andromeda, the largest galaxy in ... it from the Milky Way and, just at their ...

Conflicting distance measurements have added to the uncertainty. One data source places one object at 6,500 light years away, ...

"It's easy to romanticize Hubble and his discovery of the universe beyond the Milky Way galaxy, but his work really stood on the shoulders of a number of people," said Jeff Rich, an astronomer at ...

Beneath that is a selection of intriguing sights within the mosaic, labeled A through E: A: Star clusters in Andromeda, foreground stars in our Milky Way galaxy, and two background galaxies far ...

Now, NASA’s James Webb Space Telescope has examined one ongoing source of carbon-rich dust in our own Milky Way galaxy in greater detail: Wolf-Rayet 140, a system of two massive stars that ...

By that metric, the ESA's Gaia mission is a resounding success. The spacecraft gave us a precise, 3D map of our Milky Way galaxy and has forced us to abandon old ideas and replace them with compelling ...