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In astronomy, seeing is the degradation of the image of an astronomical object due to turbulence in the atmosphere of Earth that may become visible as blurring, twinkling or variable distortion. The origin of this effect is rapidly changing variations of the optical refractive index along the light path from the object to the detector.
Earth's atmosphere. A Terrestrial Atmospheric Lens is a theoretical method of using the Earth as a large lens with a physical effect called atmospheric refraction. [1]The sun's image appears about a half degree above its real position during sunset due to Earth's atmospheric refraction.
The animated image of the Moon's surface shows the effects of atmospheric turbulence on the view. Turbulence in Earth's atmosphere scatters the light from stars, making them appear brighter and fainter on a time-scale of milliseconds. The slowest components of these fluctuations are visible as twinkling (also called scintillation).
NASA asked the public to vote on the best images of Earth.
This temperature inversion is the opposite of what is normally the case; air is usually warmer close to the surface, and cooler higher up. In calm weather, a layer of significantly warmer air can rest over colder dense air, forming an atmospheric duct which acts like a refracting lens, producing a series of both inverted and erect images.
This image is a composite image collected over 16 days by the MODIS sensor on NASA’s Terra satellite. NASA Earth science satellite fleet as of September 2020, planned through 2023. Earth observation satellite missions developed by the ESA as of 2019. Earth observation satellites are Earth-orbiting spacecraft with sensors used to collect ...
NASA's exploration robots have rumbled around Mars, swooped around Saturn, and flown well beyond the planets, into interstellar space. But the space agency's engineers often direct their machines ...
An observer needs to be within an atmospheric duct to be able to see a Fata Morgana. [7] Fata Morgana mirages may be observed from any altitude within Earth's atmosphere, including from mountaintops or airplanes. [8] [9] Distortions of image and bending of light can produce spectacular effects.