A spectacular new image from the James Webb Space Telescope reveals intricate structures inside the Helix Nebula, where a ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Bode's Galaxy (M81) can be seen shining in the center of this cosmic vista captured by amateur ...

Cepheid stars have predictable brightness changes linked to their periods. This period-brightness relationship lets astronomers calculate a Cepheid's distance. Hubble found a Cepheid in the Andromeda ...