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

What will happen to the solar system when the Milky Way completes the merger with the Andromeda Galaxy? Bryan ...

While the events observed around Sgr A* are dramatic, this black hole is not as active as some at the center of other ...

The center of our Milky Way galaxy is hidden from the prying eyes of optical telescopes by clouds of obscuring dust and gas.

Scientists predict Andromeda and the Milky Way will collide in about 4.5 billion years—reshaping the night sky forever!.

A nebula that neighbors the Milky Way galaxy happens to be a powerhouse of forging stars, "a bouquet of thousands of stars in ...

Since Hubble’s launch, astronomers have discovered over 1 trillion galaxies, but Andromeda stands out as the closest and most ...

Astronomers spent a decade compiling this special image with the Hubble Space Telescope and then stitched together 600 photos ...

You can capture amazing astrophotos with only a camera and a tripod — this beginner's guide will show you how.

The James Webb Space Telescope has zoomed in on Leo P, a tiny galaxy with some big things to say about star formation.

A bouquet of thousands of stars in bloom has arrived. This composite image contains the deepest X-ray image ever made of the ...