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Scientists have found three strange galaxies far away from Earth. These galaxies look very faint, like ghosts in space. Most galaxies have a lot of dark matter. Dark matter is an invisible glue that helps stars stay together. However, researchers were surprised to find that these three galaxies have almost no dark matter at all. A recent study explains that two large galaxies probably crashed into each other long ago. During this violent collision, the normal gas stopped, but the dark matter continued to move forward. This event left behind new galaxies that struggle to form stars.

科学家们在远离地球的地方发现了三个奇怪的星系。这些星系看起来非常微弱，就像太空中的幽灵一样。大多数星系都含有大量的暗物质。暗物质是一种看不见的胶水，能帮助恒星聚在一起。然而，研究人员惊讶地发现，这三个星系几乎完全没有暗物质。最近的一项研究解释说，两个大星系在很久以前可能撞在了一起。在这次剧烈的碰撞中，普通气体停了下来，但暗物质继续向前移动。这一事件留下了很难形成恒星的新星系。