Tag: sky

APOD: 2009 December 20 – Tutulemma: Solar Eclipse Analemma

nasa bookmarks, ha ha. “If you went outside at exactly the same time every day and took a picture that included the Sun, how would the Sun appear to move? With great planning and effort, such a series of images can be taken. The figure-8 path the Sun follows over the course of a year is called an analemma.”