The McDonald Observatory's Dark Skies Initiative, successful in West Texas, is now expanding to New Mexico to combat artificial sky brightness.

The Mount Washington Observatory recorded a peak wind gust of 161 mph on Monday, the highest daily peak gust since February ...

Like its mythological namesake, the Phoenix Cluster burns with blisteringly hot gas, which cools to birth stars. The James ...

This breakthrough builds on more than a decade of research using NASA’s Chandra X-ray Observatory and Hubble Space Telescope, along with several powerful ground-based observatories.

On February 16, 1948, the Dutch-American astronomer Gerard Kuiper discovered Miranda, a moon of Uranus. This was the fifth moon to be discovered at Uranus, but astronomers have found 27 by now. When ...

Gaia-4b, a giant exoplanet orbiting a small star, is the first planet confirmed using Gaia’s astrometric technique.