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The Heart Nebula, Sh2-190 // Barry Li

#astronomy #astrophotography #nebula #emission nebula #star-forming region #heart nebula #Sh2-190 #IC 1805 #cassiopeia

From Astronomy Picture of the Day; October 21, 2025:

IC 1805: The Heart Nebula Image Credit & Copyright: Toni Fabiani What electrifies the Heart Nebula? First, the large emission nebula on the left, catalogued as IC 1805, looks somewhat like a human heart. The nebula glows brightly in red light emitted by its most prominent element, hydrogen, but this long-exposure image was also blended with light emitted by silicon (yellow) and oxygen (blue). In the center of the Heart Nebula are young stars from the open star cluster Melotte 15 that are eroding away several picturesque dust pillars with their atom-exciting energetic light and winds. The Heart Nebula is located about 7,500 light years away toward the constellation of Cassiopeia. At the top right of the Heart Nebula is the companion Fishhead Nebula. This wide and deep image clearly shows, though, that glowing gas surrounds the Heart Nebula in all directions. Starship Asterisk* APOD Discussion Page for Today’s Image

The APOD website is down due to the government shutdown, however new images are still being posted to the website’s discussion forum and mirror sites.