Celestial hemisphere:  Northern  ·  Constellation: Triangulum (Tri)  ·  Contains:  IC 142  ·  M 33  ·  NGC 598  ·  NGC 604  ·  Triangulum Galaxy  ·  Triangulum Pinwheel
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NGC 604, Roberto Marinoni
NGC 604
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NGC 604, Roberto Marinoni
NGC 604
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Description

NGC 604 is a region of ionized hydrogen (H II) inside the Triangle Galaxy (M33), discovered by William Herschel in 1784: inside it there are more than 200 newborn stars that ionize the gases of the nebula.

NGC 604 is one of the largest H II regions of the Local group. Considering the estimated distance of the galaxy in which it resides (2.7 million light years), we obtain a diameter of 1500 light years for the widest part: it is therefore over 40 times larger than the visible part of the Orion nebula, and is even 6300 times brighter, so much so that if NGC 604 were at the same distance as the Orion nebula it would appear to us brighter than Venus (info from Wikipedia)

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NGC 604, Roberto Marinoni

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Astrofili Dalai Lama
Imagers of Italy