A family portrait of the Andromeda galaxy and its orbiting dwarf satellites raises questions about how galaxies evolve.

Dozens of dwarf galaxies swarming around the Andromeda Galaxy like bees have been caught on camera by the Hubble Space Telescope, which took more than a thousand orbits of the Earth to take enough ...

One of the great places to look for dwarf galaxies is the halo of the Andromeda galaxy (also known as Messier 31, or M31 for short), due to its relative proximity. UNIONS is so far the deepest ...

For centuries, planets beyond our solar system—called exoplanets—existed only in theory and science fiction. It seemed nearly impossible to detect planets light-years away, since the ...

Exoplanets are the celestial bodies orbiting stars other than our Sun. Their small size makes them difficult to detect from Earth, particularly as they appear much dimmer than their parent stars ...

I study stellar and gas dynamics near massive black holes, with applications to our Galactic center, the Andromeda (M31) nucleus and post-starburst galaxies. I'm also interested in the strange orbits ...

NASA discovered five "ultra-short-period" exoplanets orbiting their stars in under 24 hours, defying speed limits and challenging current planetary formation theories. A gas giant that orbits its ...

The Hubble Space Telescope has been snapping pictures of the universe for the best part of 35 years, and now astronomers have completed a magnificent 417-megapixel photomosaic of the Andromeda galaxy.

The largest photomosaic of the Andromeda galaxy, assembled from over a decade of observations by the NASA/ESA Hubble Space Telescope, has unveiled a stunning portrait of our neighboring galaxy ...

Now we are closer than ever to getting an answer. That’s thanks in large part to the astronomers who are searching for exoplanets—planets orbiting other stars—that could be home to life.

10) that it has picked SpaceX to launch Pandora, a 716-pound (325-kilogram) satellite designed to help scientists better understand how our understanding of exoplanets' atmospheres are affected by ...