[오늘의 천체사진] 갈매기 성운

갈매기 성운 /NASA 지아니 라크로체

갈매기 성운으로 유명한 이 성운은 별명처럼 새와 같은 모습을 보여줍니다. 가스와 먼지 구름, 밝고 젊은 별들이 수소 원자의 붉은 빛으로 성운을 가득 채웁니다. 지구로부터 약 3800광년 거리에 있는 갈매기 성운은 큰개자리의 알파 별인 시리우스 방향에서 은하수 평면을 가로지르는 1.6도 폭의 넓은 영역에 걸쳐 볼 수 있습니다. 성운의 크기는 100광년 이상에 달하며, 갈매기 성운 뿐 아니라 갈매기의 머리를 만드는 반사성운 NGC 2327도 함께 있습니다.

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