銀河戰爭:M 81 對 M 82
Galaxy Wars: M81 versus M82

來源:Collaborative Astrophotography Team (CAT)|發表日期:2025-05-07
左上角是螺旋星系 M 81 ,它被藍色的臂環繞,點綴著紅色的星雲。 右下角是不規則星系 M 82 ,它被一條淺色中心線標出,周圍環繞著紅色發光氣體。 這令人驚歎的美景展示了這兩個巨型星系在過去的十億年裡一直處於引力交戰狀態。 每個星系的引力在每億年的交替中都會對另一個星系產生巨大的影響。 上一輪,M 82 的引力很可能引發了 M 81 周圍的密度波,導致 M 81 的旋臂變得豐富多彩。 但是 M 81 給 M 82 留下了劇烈的恆星形成區和碰撞的氣體雲,這些氣體雲的能量非常大,星系在 X 射線下會發光。 從地球上透過綜合流量星雲的微弱光芒可以看到這場大戰,綜合流量星雲是銀河系中瀰漫的氣體和塵埃雲組成的複合體,人們對它的研究很少。幾十億年後,銀河系將只剩下一個星系。
原文:In the upper left corner, surrounded by blue arms and dotted with red nebulas, is spiral galaxy M81. In the lower right corner, marked by a light central line and surrounded by red glowing gas, is irregular galaxy M82. This stunning vista shows these two mammoth galaxies locked in gravitational combat, as they have been for the past billion years. The gravity from each galaxy dramatically affects the other during each hundred-million-year pass. Last go-round, M82's gravity likely raised density waves rippling around M81, resulting in the richness of M81's spiral arms. But M81 left M82 with violent star forming regions and colliding gas clouds so energetic the galaxy glows in X-rays. This big battle is seen from Earth through the faint glow of an Integrated Flux Nebula, a little studied complex of diffuse gas and dust clouds in our Milky Way Galaxy. In a few billion years, only one galaxy will remain.
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