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exosphere    
n. 外气层

外气层


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  • Exosphere - Wikipedia
    Earth's exosphere, energetic neutral atoms (ENA) and magnetosphere In principle, the exosphere covers distances where particles are still gravitationally bound to Earth, i e particles still have ballistic orbits that will take them back towards Earth
  • Layers of the Atmosphere - National Oceanic and Atmospheric Administration
    It extends from about 375 miles (600 km) to 6,200 miles (10,000 km) above the earth In this layer, atoms and molecules escape into space and satellites orbit the earth At the bottom of the exosphere is a transition layer called the thermopause
  • The Exosphere - Center for Science Education
    The exosphere is the uppermost region of Earth's atmosphere as it gradually fades into the vacuum of space The air in the exosphere is extremely thin - in many ways, it is almost the same as the airless void of outer space
  • Exosphere | NASA Space Place – NASA Science for Kids
    The exosphere is the outermost layer of our atmosphere “Exo” means outside and is the same prefix used to describe insects like grasshoppers that have a hard shell or “exoskeleton” on the outside of their body
  • Layers of the Earths Atmosphere - Facts with Diagram
    The exact altitude can vary based on solar activity Its lower boundary is called exobase or exopause, and this is the altitude above which atmospheric temperature remains almost constant The exosphere is the least dense layer of the atmosphere, comprised of mostly helium and hydrogen
  • Exosphere | Thermosphere, Ionosphere Magnetosphere | Britannica
    exosphere, outermost region of a planet’s atmosphere, where molecular densities are low and the probability of collisions between molecules is very small
  • What Is the Exosphere and What Does It Do?
    What is the exosphere and what does it do? The exosphere is the outermost layer of the Earth's atmosphere, located 310 miles above sea level and acts as a barrier between the Earth and space
  • 20 Facts About The Exosphere - OhMyFacts
    The exosphere is Earth's outermost layer, where the atmosphere meets space It's a thin, vast region with unique characteristics, playing a crucial role in space exploration and protecting our planet from meteoroids
  • What Is the Exosphere? - Earth How
    The Earth’s atmosphere is divided into five major layers with the exosphere as the outermost layer of the Earth’s atmosphere The exosphere, situated at the outermost fringes of the atmosphere, is where the transition from Earth’s gaseous envelope to the vacuum of outer space occurs
  • What Are The 5 Layers Of The Earths Atmosphere? - WorldAtlas
    Unlike other layers, which are mostly distinguishable from one another, it is hard to say how far the exosphere is from the surface of the planet Somewhere it is around 100,000 km, but it can expand up to 190,000 km above sea level





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