Ficheiro:Irregular galaxy Holmberg II (captured by the Hubble Space Telescope).tif

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The NASA/ESA Hubble Space Telescope has captured this image of dwarf irregular galaxy Holmberg II. The galaxy is dominated by huge bubbles of glowing gas, which are sites of ongoing star formation.

As high-mass stars form in dense regions of gas and dust they expel strong stellar winds that blow away the surrounding material. The cavities are also blown clear of gas by the shock waves produced in supernovae, the violent explosions that mark the end of the lives of massive stars.
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Origem http://spacetelescope.org/images/heic1114a/ (direct link)
Autor NASA & ESA
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Atribuição: NASA & ESA
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Data e horaMiniaturaDimensõesUtilizadorComentário
atual20h28min de 14 de dezembro de 2011Miniatura da versão das 20h28min de 14 de dezembro de 20113 682 × 3 696 (39,66 MB)Prof. Professorson{{Information |Description=The NASA/ESA en:Hubble Space Telescope has captured this image of dwarf en:irregular galaxy Holmberg II. The galaxy is dominated by huge bubbles of glowing gas, which are sites of ongoing en:star formation. As

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