Galaxies

NASA's forthcoming Nancy Grace Roman Space Telescope will zoom in on streams of stars in the Andromeda galaxy to hunt for dark matter.

The Hubble Space Telescope zoomed into a galaxy 150 million light years away to study a supernova that released 2.5 billion times more energy than the sun, resulting in a stunning image.

Directly mapping the Milky Way is an extremely challenging task, but observations of other galaxies helped us piece together what our home galaxy looked like.

An unexpected and unexplained gamma-ray signal from beyond the Milky Way found among 13 years of NASA Fermi Telescope data could be linked to another cosmic mystery.

Astronomers inadvertently discovered a "dark" galaxy rich in gas but lacking stars when they pointed the Green Bank Telescope in the wrong direction.

Mysterious "odd radio circles" or ORCs that compass entire galaxies may have finally been explained, with astronomers pointing the finger at winds from bursts of supernova star explosions.

New observations of the Small Magellanic Cloud show that it might actually be two galaxies disguised as one.

Observations have revealed the first-ever seismic waves seen in an ancient galaxy, offering new insight on the origins of our very own Milky Way.

The new study of galaxies, centered around a value for cosmic lumpiness known as S8, could join the Hubble tension in dethroning our best picture of how the universe evolved.