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The Europa rocket was an early expendable launch system of the European Launcher Development Organisation (ELDO), which was the precursor to the European...

S5 0014+81 is a distant, compact, hyperluminous, broad-absorption-line quasar, or blazar, located near the high declination region of the constellation...

Astronomy Day is an annual event in various countries, intended to provide a means of interaction between the general public and various astronomy enthusiasts...

The Pipe Nebula (also known as Barnard 59, 65–67, and 78) is a dark nebula in the Ophiuchus constellation and a part of the Dark Horse Nebula. It is a...

A balloon tank is a style of propellant tank used in the SM-65 Atlas intercontinental ballistic missile (ICBM) and Centaur upper stage that does not use...