File:Eagle.column1.arp.750pix.jpg

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描述
English: STScI-1995-44 Star-birth clouds in M16, taken from NASA's Hubble Space Telescope (HST) with its Wide Field/Planetary Camera 2 (WFPC2): Stellar “eggs” emerge from molecular cloud.

This eerie, dark structure in IC 4703 (the Eagle nebula) is a column of cool molecular hydrogen gas and dust that is an incubator for new stars. The stars are embedded inside finger-like protrusions clearly seen extending from the top of the column. Each “fingertip” is somewhat larger than our own solar system.
The pillar is slowly eroding away by the ultraviolet light from nearby hot stars, a process called “photoevaporation”. As it does, small globules of especially dense gas buried within the cloud are uncovered. These globules have been dubbed “EGGs” ; an acronym for “Evaporating Gaseous Globules”. The shadows of the EGGs protect gas behind them, resulting in the finger-like structures at the top of the cloud.

ST ScI OPO • PRC95-44b
日期
来源 http://hubblesite.org/newscenter/newsdesk/archive/releases/1995/44/image/b
作者 Jeff Hester and Paul Scowen (Arizona State University), Hubble Space Telescope, ESA, STScI, and NASA
授权
(二次使用本文件)		 “Material credited to STScI on this site was created, authored, and/or prepared for NASA under Contract NAS5-26555. Unless otherwise specifically stated, no claim to copyright is being asserted by STScI and it may be freely used as in the public domain in accordance with NASA's contract. However, it is requested that in any subsequent use of this work NASA and STScI be given appropriate acknowledgement.”

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Public domain
This file is in the public domain because it was created by NASA and ESA. NASA Hubble material (and ESA Hubble material prior to 2009) is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA is credited as the source of the material. This license does not apply if ESA material created after 2008 or source material from other organizations is in use.

The material was created for NASA by Space Telescope Science Institute under Contract NAS5-26555, or for ESA by the Hubble European Space Agency Information Centre. Copyright statement at hubblesite.org or 2008 copyright statement at spacetelescope.org.

For material created by the European Space Agency on the spacetelescope.org site since 2009, use the {{ESA-Hubble}} tag.

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