M55 is a globular cluster of stars in the constellation Sagittarius. This image was captured by NASA's Hubble Space Telescope. NGC 1858 is a bright, large, irregular open cluster and emission nebula.

The galaxy NGC 4535, in the Virgo constellation, is about 50 million light-years from Earth. This beautiful image was ...

An unusual elliptical galaxy with a history of absorbing smaller galaxies appears to be approaching its next target.

The James Webb Space Telescope was late to launch, but the observatory is making up for lost time. After several years of ...

Caldwell 103 is a treasure of the southern night sky. Also cataloged as NGC 2070 and often called the Tarantula Nebula or 30 Doradus, this chimerical structure is nestled in the Large Magellanic Cloud ...

This NASA/ESA Hubble Space Telescope reveals clouds of gas and dust near the Tarantula Nebula, located in the Large ...

H3+, known as "the molecule that made the universe," plays a crucial role in interstellar chemistry and the birth of stars.

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

It turns out that one of the most prominent space artists predicted how a strange celestial object would look — 50 years in ...

On May 20, 1990, the Hubble Space Telescope sent its first image to Earth. This photo turned out to be 50% sharper than ...