- planetary scale
- 行星尺度
Atmospheric Sciences (English-Chinese) dictionary. 2014.
planetary scale
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Planetary engineering — is the application of technology for the purpose of influencing the global properties of a planet. [cite book| authorlink=Martyn J. Fogg| last=Fogg| first=Martyn J.| year=1995| title=Terraforming: Engineering Planetary Environments| publisher=SAE … Wikipedia
Planetary ecosynthesis — is defined as the making of a home for life on a planetary scale. The term was first used in a 1976 NASA research program and is attributed to Robert MacElroy. Planetary ecosynthesis implies a process of directly engineering the evolution of a… … Wikipedia
Planetary science — Planetary science, also known as planetology and closely related to planetary astronomy, is the science of planets, or planetary systems, and the solar system. Incorporating an interdisciplinary approach, planetary science draws from diverse… … Wikipedia
Planetary cartography — includes all cartographic materials produced for objects with solid surfaces external to the Earth. This can include any spatially mapped characteristic (e.g., topography, geology, and geophysical properties) for extraterrestrial surfaces. Also… … Wikipedia
Planetary nebula luminosity function — (PNLF) is a secondary distance indicator used in astronomy. It makes use of the [O III| [O III] λ5007 forbidden line found in all planetary nebula which are members of the old stellar populations (Population… … Wikipedia
Planetary mass — The four terrestrial planets in the Solar System, to scale. Note that Mars (to the far right) is about half the diameter of the Earth, but only one ninth of the mass … Wikipedia
Scale height — A scale height is a term often used in scientific contexts for a distance over which a quantity decreases by a factor of e. It is usually denoted by the capital letter H .For planetary atmospheres, it is the vertical distance upwards, over which… … Wikipedia
Planetary nebula — A planetary nebula is an emission nebula consisting of a glowing shell of gas and plasma formed by certain types of stars when they die. The name originated in the 18th century because of their similarity in appearance to giant planets when… … Wikipedia
Planetary Phase of Civilization — TOCrightThe Planetary Phase of Civilization is a concept defined by the Global Scenario Group (GSG), an environmental organization that specializes in scenario analysis and forecasting. Proponents of the Planetary Phase of Civilization state that … Wikipedia
Extragalactic distance scale — The extragalactic distance scale is a series of techniques used today by astronomers to determine the distance of cosmological bodies (beyond our own galaxy) not easily obtained with traditional methods. Some procedures utilize properties of… … Wikipedia
Wide Field and Planetary Camera — The Wide Field/Planetary Camera (WFPC) (pronounced as wiffpick) was a camera installed on the Hubble Space Telescope. It was one of the instruments on Hubble at launch, but its functionality was severely impaired by the defects of the main mirror … Wikipedia
