2017年04月28日:探索触鬚星系-（Exploring the Antennae）--原图下载
Image Credit &Copyright:Data;Subaru, NAOJ,NASA/ESA/Hubble -Assembly and Processing;Roberto Colombari
说明: 在南天的乌鸦座之内，离我们大约6千万光年远的二个大型星系发生了碰撞。在这种历时数十亿年的大型剧变事件中，这二个编号为NGC 4038和NGC 4039的星系内之恒星，却极少发生碰撞，只有它们巨大的分子气体和尘埃云会受到影响，因而在遗留的宇宙残骸之中心附近，触发了一波波猛烈的恒星形成活动。这幅涵盖大约50万光年天区的精采影像，呈现了新诞生的星团以及被重力引潮力远远抛出的长条状物质。这幅精采的马赛克影像，因为融合了地面昴宿望远镜和哈伯太空望远镜的数据，因此得以同时呈现庞大黯淡的潮汐流，以及无比清晰的明亮星系核之结构。此一星系碰撞所造成的弯曲长条构造，让这对星系博得触鬍星系的暱称。
原文：
Image Credit &Copyright:Data;Subaru, NAOJ,NASA/ESA/Hubble -Assembly and Processing;Roberto Colombari
Explanation: Some 60 million light-years away in the southerlyconstellationCorvus, two large galaxies arecolliding.Stars in the two galaxies, cataloged asNGC 4038and NGC 4039, very rarely collide in the course of theponderous cataclysm thatlasts for hundreds of millions of years.But the galaxies' large clouds ofmoleculargas and dust often do, triggeringfuriousepisodes of star formation near the center of thecosmic wreckage.Spanning over 500 thousand light-years, thisstunning view also reveals new star clusters andmatter flung far from the scene of the accident bygravitationaltidal forces.The remarkable mosaicked image was constructedusing data from the ground-based Subaru telescopeto bring out large-scale and faint tidal streams, andHubble Space Telescope data of extreme detail in thebright cores.The suggestive visual appearance of theextended arcingstructures gives the galaxy pair its popular name - The Antennae.
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