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Birthday · February 13, 2026

NGC 147 and NGC 185

February 13, 2026

Long before your first heartbeat, stars were busy forging the elements you would one day call your own.

NGC 147 and NGC 185

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APOD published February 13, 2026. Credit: Chuck Ayoub. A publication-date match, not a photo taken on your date. Independent of NASA.

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NGC 147 and NGC 185

Original APOD · February 13, 2026

Dwarf galaxies NGC 147 (left) and NGC 185 stand side by side in this deep telescopic portrait. The two are not-often-imaged satellite galaxies of M31, the great spiral Andromeda Galaxy, some 2.5 million light-years away. Their separation on the sky, less than one degree across a pretty field of view toward the constellation Cassiopeia, translates to only about 35 thousand light-years at Andromeda's distance, but Andromeda itself is found well outside this frame. Brighter and more famous satellite galaxies of Andromeda, M32 and M110, are seen much closer to the great spiral. NGC 147 and NGC 185 have been identified as binary galaxies, forming a gravitationally stable binary system. But recently discovered faint dwarf galaxy Cassiopeia II also seems to be part of their system, forming a gravitationally bound group within Andromeda's intriguing population of small satellite galaxies.

Image credit: Chuck Ayoub

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