The Andromeda Galaxy, a vast spiral system located roughly 2.5 million light-years from Earth, has been photographed barely ...

Could that faint glow in the autumn sky be an entire galaxy sending us light from 2.5 million years ago?

Andromeda is a constellation based on the Ethiopian princess Andromeda from Greek mythology. It is located between Cassiopeia ...

Add Yahoo as a preferred source to see more of our stories on Google. A close-up view of a prodigious number of stars in the Andromeda galaxy. The Andromeda galaxy is a colossal marvel in our sky, ...

When I look up at the night sky,"I wonder, when exactly did this light originate?"I sometimes think.This time, I photographed ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. This illustration shows a stage in the predicted merger ...

A seemingly small, unassuming constellation is rising in the east after sunset: Triangulum. One of the smallest constellations (ranking 78th out of 88), this simple star pattern is nonetheless ...

The northern sky’s greatest galaxy gets its familiar name from the northern constellation where it resides, Andromeda the Princess. This star system is our nearest large spiral galaxy, and it sits at ...

Add Yahoo as a preferred source to see more of our stories on Google. A hypothetical view from Earth as the Andromeda galaxy (on left) is about to collide with part of the Milky Way galaxy. Our Milky ...

Each Monday, I pick North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in ...

A close-up view of a prodigious number of stars in the Andromeda galaxy. Credit: NASA / ESA / B. Williams (U. of Washington) The Andromeda galaxy is a colossal marvel in our sky, hosting over 1 ...