Summer Solstice 2023: The Latest Sun Photos

European probe captures stunning up-close views of planet Mercury during brief flyby (video, photos)

In 1930, Bernard Lyot invented the coronagraph that allowed total solar eclipses to be recreated at will. It is essentially a telescope with a small disk in the focal plane to exactly cover the disk of the sun like the moon would

NASA recognizes Juneteenth with ceremonial flag-raising (photos)