Spanning approximately 220,000 light-years across, the Andromeda Galaxy is the largest galaxy of the Local Group, which also ...

The Andromeda Galaxy's family of dwarfs are an enigma. First it was the unusual flat plane around which more than half of ...

The spiral galaxy 2MASX J23453268−0449256 is located nearly 1 billion light-years away from Earth, and measures about three ...

Clearly, the Andromeda Nebula was a system of stars quite separate from the Milky Way, and in many ways comparable to it. From this simple observation, soon repeated for other starry nebulae ...

The embedded variable stars proved that the Andromeda nebula was much farther away than the stars that comprised the Milky Way. Andromeda was therefore a separate galaxy — similar to ...

"A supercomputer simulation shows many galaxies merging over time. The parts of galaxies we can see are glowing stars forming ...

The findings reveal unusual chemical signatures and offer new insights into the behavior of novas beyond the Milky Way.