In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small ...

This stunning time-lapse video of the Milky Way was captured at the Florida Keys in Bahia Honda on Feb. 26. Our home galaxy ...

Fast-moving stars in the Milky Way indicate there could be a supermassive black hole in the neighboring Large Magellanic ...

Hubble's study reveals Andromeda experienced major galactic collisions, unlike Milky Way. Its satellite galaxies show unusual ...

A star racing through the Milky Way may have a planet in tow, setting a new speed record for exoplanet systems. Using ...

Once the two galaxies are merged, the supermassive hole in the Large Magellanic Cloud – if black hole there is – will make its way to the galactic center, where it will eventually, after many more ...

The Large Magellanic Cloud, a dwarf satellite galaxy orbiting the Milky Way, causing the larger galaxy to “wobble,” imparting ...

The James Webb Space Telescope has shown that the Milky Way’s black hole is constantly blazing with light, releasing long flares as well as short flashes every day.

Related: How fast does light travel? How do the sun and galaxy move? The sun has an orbit of its own in the Milky Way. The sun is about 25,000 light-years from the center of the galaxy ...

"Everything scattered in the Andromeda system is very asymmetric and perturbed. It does appear that something significant ...

A family portrait of the Andromeda galaxy and its orbiting dwarf satellites raises questions about how galaxies evolve.