The best time to hunt for Ursid meteors is from the evening of Dec. 21 straight through to dawn on Dec. 22. The shower's peak ...
A heritage of dark sky preservation means residents of Flagstaff welcome the season’s longer nights with prolonged views of ...
Today marks the shortest day and longest night of the year as the sun reaches its lowest point in the Northern Hemisphere sky ...
This mash-up of data from the James Webb Space Telescope and the Chandra X-ray Observatory reveals two galaxies mid-collision, with their spiral arms overlapping and bending toward their neighbors' ...