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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...

The universe is commonly defined as the totality of existence, including planets, stars, galaxies, the contents of intergalactic space, and all matter and energy. Definitions and usage vary and similar terms include the cosmos, the world and nature. Scientific observation of earlier stages in the development of the universe, which can be seen at great distances, suggests that the universe has been governed by the same physical laws and constants throughout most of its extent and history...

The Antonov An-12 (NATO reporting name: Cub) is a four-engined turboprop transport aircraft designed in the Soviet Union. It is the military version of the Antonov An-10 and was made in many variants. Design and development The first prototype flew in December 1957. Over 900 had been built, in both military and civilian versions, before production finally ended in 1973. The An-12BP entered Soviet military service in 1959...

Lingotto is a district of Turin, Italy, and the location of the Lingotto building in Via Nizza. This building once housed an automobile factory built by Fiat. Construction started in 1916 and the building opened in 1923. The design (by young architect Matté Trucco) was unusual in that it had five floors, with raw materials going in at the ground floor, and cars built on a line that went up through the building. Finished cars emerged at rooftop level, where there was a rooftop test track...