earth-reentry altitude

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• Earth — This article is about the planet. For other uses, see Earth (disambiguation). Earth   …   Wikipedia

• Earth and Space Sciences — ▪ 1996 Introduction GEOLOGY AND GEOCHEMISTRY       In 1995 significant developments took place in the realm of geologic mapping, which provides the foundation for the presentation and comparison of data in the Earth sciences. The most important… …   Universalium

• Atmospheric reentry — refers to the movement of human made or natural objects as they enter the atmosphere of a planet from outer space, in the case of Earth from an altitude above the edge of space. This article primarily addresses the process of controlled reentry… …   Wikipedia

• Atmosphere of Earth — Air redirects here. For other uses, see Air (disambiguation). Qualities of air redirects here. It is not to be confused with Air quality …   Wikipedia

• Low Earth orbit — An orbiting cannon ball showing various sub orbital and orbital possibilities …   Wikipedia

• Skylab — Infobox Space station station = Skylab station station image size = station image caption = A view of Skylab from the departing Skylab 4 mission insignia = Skylab Patch.png insignia size = insignia caption = sign = Skylab crew = 3 launch = 1973… …   Wikipedia

• Sub-orbital spaceflight — A sub orbital spaceflight (or sub orbital flight) is a spaceflight in which the spacecraft reaches space, but its trajectory intersects the atmosphere or surface of the gravitating body from which it was launched, so that it does not complete one …   Wikipedia

• Moon landing — For other uses, see Moon landing (disambiguation). Still frame from the video transmission of Neil Armstrong stepping onto the surface of the Moon at 02:56 UTC on 21 July 1969. An estimated 500 million people worldwide watched this event,… …   Wikipedia

• space exploration — Investigation of the universe beyond Earth s atmosphere by means of manned and unmanned spacecraft. Study of the use of rockets for spaceflight began early in the 20th century. Germany s research on rocket propulsion in the 1930s led to… …   Universalium

• spaceflight — /spays fluyt /, n. the flying of manned or unmanned spacecraft into or in outer space. Also, space flight. [1945 50; SPACE + FLIGHT1] * * * Introduction  flight beyond Earth s atmosphere. This article deals with the basic concepts associated with …   Universalium

• ARCA (NGO) — ARCA Type Private Industry Aerospace and space tourism Founded 1999 …   Wikipedia