棒旋星系NGC 5335
(原标题: Barred Spiral Galaxy NGC 5335)
2025-04-26
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这张令人惊叹的NGC 5335的照片是由哈勃太空望远镜拍摄的。这个壮观的螺旋星系直径约17万光年，距离室女座超过2亿光年，在哈勃望远镜的视野中被正面看到。在星系盘内，恒星形成区域的松散飘带沿着星系絮状的旋臂分布。但NGC 5335最引人注目的特征是其突出的中央棒状结构。在包括我们的银河系在内的大约30%的星系中都可以看到棒状结构，人们认为棒状结构可以将物质向内引导到星系中心，为恒星的形成提供燃料。当然，遥远的背景星系很容易被发现，它们分散在哈勃清晰的图像周围。哈勃望远镜于1990年发射升空，现在正在庆祝它从地球轨道上探索宇宙的第35个年头。
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This stunning portrait of NGC 5335 was captured by the Hubble Space Telescope. Some 170,000 light-years across and over 200 million light-years away toward the constellation Virgo, the magnificent spiral galaxy is seen face-on in Hubble's view. Within the galactic disk, loose streamers of star forming regions lie along the galaxy's flocculent spiral arms. But the most striking feature of NGC 5335 is its prominent central bar. Seen in about 30 percent of galaxies, including our Milky Way, bar structures are understood to channel material inward toward the galactic center, fueling star formation. Of course, distant background galaxies are easy to spot, scattered around the sharp Hubble image. Launched in 1990, Hubble is now celebrating its 35th year exploring the cosmos from orbit around planet Earth.