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The sky is the part of the atmosphere or outer space visible from the surface of any astronomical object. It is difficult to define precisely for several reasons. During daylight, the sky of Earth has the appearance of a pale blue surface because the air scatters the sunlight. The sky is sometimes defined as the denser gaseous zone of a planet's atmosphere. At night the sky has the appearance of a black surface or region scattered with stars...

Mildred Delores Jeter Loving (July 22, 1939 – May 2, 2008) and her husband Richard Perry Loving (October 29, 1933 – June 29, 1975) were plaintiffs in the landmark U.S. Supreme Court case Loving v. Virginia (1967). The Lovings were an interracial married couple who were criminally charged under a Virginia statute banning such marriages. With the help of the American Civil Liberties Union (ACLU), the Lovings filed suit seeking to overturn the law...

A POTD is an acronym for "Photo of the Day", "Picture of the Day", "Post of the Day" or "Poll of the Day". It is a term most commonly used by online digital photography communities as an honor to outstanding photos that are selected daily from among that community's membership. They can either be tagged as POTD or displayed in a special page on that site...

A cloud is a visible mass of water droplets or frozen ice crystals suspended in the atmosphere above the surface of the Earth or another planetary body. Clouds in the Earth's atmosphere are studied in the nephology or cloud physics branch of meteorology. Two processes, possibly acting together, can lead to air becoming saturated: cooling the air or adding water vapor to the air. Generally, precipitation will fall to the surface; an exception is virga which evaporates before reaching the surface...