The Andromeda Galaxy, our Milky Way’s colossal neighbor, lies 2.5 million light-years away yet shines visibly in dark skies.

A stronomers have discovered that the Milky Way might be just a small piece of a much larger cosmic structure than previously ...

The phenomenon is a key to galaxy formation. When galaxies collide, their central supermassive black holes often merge, ...

The Andromeda galaxy is the galaxy next door, a very faint, fuzzy thing in the night sky, larger than a full moon. Textbooks ...

The Andromeda Galaxy (M31, NGC 224) is a truly stunning and colossal presence in our universe, located 2.5 million light years away in the Andromeda constellation. This supergiant spiral galaxy, often ...

A decade of observations by NASA’s Hubble Space Telescope has produced the sharpest and most detailed images of the Andromeda galaxy. Zoom in and explore.

Astronomers deployed the Hubble Space Telescope over the course of a decade to conduct 600 separate observations to produce ...

Hidden in the ‘Infinity Galaxy,’ a black hole floats in space where none should exist, upending old ideas about black hole ...

The annual competition for professional and amateur astrophotographers released its shortlisted images, which capture the ...

The awe-inspiring distances of the cosmos are hard to visualise, so how can we be certain we are measuring them correctly?

In its first year alone, it will double the amount of data collected so far by every other instrument in the history of ...

A new composite image of the Andromeda Galaxy is offering an unprecedented view of our closest spiral galactic neighbor. Composed by NASA and international space partners, the image combines data from ...