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Astronomy Picture of the Day: Cosmic Collision Forges Galactic Ring
How could a galaxy become shaped like a ring?
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Bubble nebula & M52 -NGC7538
سحابی جغد و کهکشان ام 108
به بهانه روز عکاسی
شکوه راه شیری و مریخ
پاسی از شب
غروب
Lunar Eclipse Startrail above Damavand P
آندرومدا
قدم زدن ناهید و هرمز
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