NASAのインスタグラム(nasagoddard) - 8月11日 05時30分

Turning its eye to the Tarantula Nebula, Hubble took this close-up of the outskirts of the main cloud. The bright wispy structures are the signature of an environment rich in ionized hydrogen gas, called H II by astronomers. In reality these appear red, but the choice of filters and colors of this image, which includes exposures both in visible and infrared light, make the gas appear green. These regions contain recently formed stars, which emit powerful ultraviolet radiation that ionizes the gas around them. These clouds are ephemeral as eventually the stellar winds from the newborn stars and the ionization process will blow away the clouds, leaving stellar clusters like the Pleiades. #nasa #hubble #space #star

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