On May 20, during the Annular Eclipse of the Sun NASA, scientists, amateur astronomers, and the National Park Service teamed up to share their telescopes and knowledge with park visitors. The eclipse was followed by an evening South Rim Star Party. At Grand Canyon, observers saw the moon pass fully over the sun, leaving only a ring of sun visible around it. On both rims, at posted locations rangers used pinhole cameras and/or "solar projection" to show additional images of the eclipsed sun. NPS photo sequence from Yaki Point by Kristen M Caldon.