A dazzling snapshot from ESO’s Paranal Observatory captures a rare sky parade — the Moon, a comet, and nearly every visible planet strung across the heavens. This celestial lineup is an optical ...

In celebration of the 35th anniversary of the legendary space telescope’s launch, here are 35 of our favorite images it has ...

The school-bus-sized observatory launched on April 24, 1990 and overcame early setbacks to become one of the most ...

Since its discovery, hundreds of observations of the comet have been logged into the International Astronomical Union’s Minor ...