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Peculiar Spiral Galaxy Arp 78:
Located in the constellation Aries, about 100 million light-years from Earth, Arp 78, also known as NGC 772, spans 200,000 light-years. It features a prominent outer spiral arm enriched with young blue star clusters and distinct dust lanes, impacted by gravitational interactions with its companion galaxy, NGC 770. This interaction contributes to Arp 78’s unique spiral structure. The text also contains a note regarding changes in APOD’s submission process.
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