Early morning hours when the first quarter moon has already set and the sun has yet to rise are the best time this year to ...

The Gemini North telescope atop Mauna Kea in Hawaii has delivered a stunning new image of the Perseus galaxy cluster, a massive structure located approximately 240 million light-years from Earth.

She joined PEOPLE in 2021, but has eight years of experience ... high near their corresponding constellation. For the Perseids, that star cluster is known as the Perseus constellation, which ...

The composite image of NGC 1275, or Perseus A, reveals its dynamic structure by blending optical, radio, and X-ray data. Cygnus X-1, about 10,000 light-years away, is a powerful black hole pulling ...

Euclid’s sharp eyes have been peering at the Perseus Cluster, one of the largest structures in the known universe 240,000,000 light-years from ... a dying star in the constellation Draco ...