"It was actually a total surprise to find the satellites in that configuration and we still don’t fully understand why they appear that way." ...

The Andromeda galaxy, our cosmic neighbor, is far more turbulent than previously thought. A new survey by the Hubble Space Telescope has mapped the chaotic history of Andromeda’s dwarf galaxy system, ...

A Swarm of Dwarf Galaxies Buzz Around Our Milky Way's Twin Imagine the Milky Way and Andromeda as two massive aircraft ...

Fluffy strands of cosmic gas and dust illuminated by bright young stars form a beautiful cloudscape in a neighboring nebula.

Andromeda XXXV is only about 20,000 times more massive than our Sun—very small, even for a satellite galaxy. For comparison, ...

Though tiny, this newfound satellite galaxy around M31 offers big lessons — and questions — about how galaxies evolve.

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

which will help astronomers to rewind the motions of the entire Andromeda ecosystem billions of years into the past. The Hubble Space Telescope has been operating for over three decades and ...

The European Space Agency has released the first batch of large-scale images from the Euclid space telescope, which ...

An ambitious survey by the Hubble Space Telescope was made to plot the galaxy locations in three-dimensional space. In this video we circle around a model of the Andromeda system based on real ...