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pillars of creation
"Pillars of Creation" is a photograph taken by the Hubble Space Telescope of elephant trunks of interstellar gas and dust in the Eagle Nebula, some 7,000 light years from Earth. They are so named because the gas and dust are in the process of creating new stars, while also being eroded by the light from nearby stars that have recently formed.〔(Embryonic Stars Emerge from Interstellar "Eggs" ), Hubble news release〕 Taken on April 1, 1995, it was named one of the top ten photographs from Hubble by Space.com.〔(Best Hubble Space telescope images ) from Space.com. (copy )〕 The astronomers responsible for the photo were Jeff Hester and Paul Scowen from Arizona State University. In 2011, the region was revisited by ESA's Herschel Space Observatory.
== Composition ==
The pillars are composed of cool molecular hydrogen and dust that are being eroded by photoevaporation from the ultraviolet light of relatively close and hot stars. The leftmost pillar is about four light years in length. The finger-like protrusions at the top of the clouds are larger than our solar system, and are made visible by the shadows of evaporating gaseous globules (EGGs), which shields the gas behind them from intense UV flux. EGGs are themselves incubators of new stars.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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