An illustration of two galaxies in the midst of a collision against a dark, star-filled background. The collision takes up the middle third of the illustration. On the right, a larger galaxy is viewed at an angle from 11 o’clock to 4 o’clock, with a white-yellow core surrounded by mottled brown dust lanes and faint bluish spiral arms. To the left, a smaller, bright blue-white galaxy is stretched into a curved, hook-like shape as gravity distorts it. A broad, glowing bridge of pale blue gas and stars extends off the galaxy at the left, while wispy streams extend above and below the larger galaxy at the right. The words “Artist’s Concept” appear in the lower left corner.
An illustration of two galaxies in the midst of a collision against a dark, star-filled background. The collision takes up the middle third of the illustration. On the right, a larger galaxy is viewed at an angle from 11 o’clock to 4 o’clock, with a white-yellow core surrounded by mottled brown dust lanes and faint bluish spiral arms. To the left, a smaller, bright blue-white galaxy is stretched into a curved, hook-like shape as gravity distorts it. A broad, glowing bridge of pale blue gas and stars extends off the galaxy at the left, while wispy streams extend above and below the larger galaxy at the right. The words “Artist’s Concept” appear in the lower left corner. · 点击图片查看原图

内容提要
一项基于哈勃空间望远镜数据的研究揭示了银河系在演化早期曾与一个矮星系发生过并合。这一发现将我们对银河系历史的认知向前推进了18亿年。

原文全文译文

这张于2026年8月17日发布的艺术家概念图，描绘了约120亿年前我们的银河系（Milky Way galaxy）与一个名为LKH的矮星系（dwarf galaxy）之间发生的碰撞。近期发表在《自然-天文学》（Nature Astronomy）期刊上的一项研究，展示了矮星系在银河系演化早期阶段与其发生并合（galaxy merging）的确凿证据。这一发现将我们对银河系历史的认知比以往向前推进了18亿年。

图注：图片来源：NASA, ESA, Joseph Olmsted (STScI)

分类：星系 · 观测设备
其他来源报道（1）NASA 每日图片：Ancient Milky Way Merger

来源与许可

原文来自公共领域来源；译文由机器生成，请以原文为准。 原作者：HQ Web Team。 原始页面