The physicist Fabian reasoned that as intergalactic gas cools, the cooler gas shrinks inward toward the center of the galaxy.
物理学家费边推断，当星系间的气体冷却时，较冷的气体向星系中心收缩。
Meanwhile, its place is taken by hotter intergalactic gas from farther out on the edge of the galaxy, which cools as it is compressed and flows into the galaxy.
与此同时，它的位置被更热的星系间气体所取代，这些气体来自更远的星系边缘，在被压缩的过程中冷却并流入星系。
What's happening out there is that intergalactic gas has concentrated around a cluster of galaxies, forming a cloud.
那里的星际气体已集中在星系群周围形成了云层。
Meanwhile its place is taken by hotter intergalactic gas from farther out on the edge of the galaxy, which cools as it is compressed and flows into the galaxy.
同时，其位置被离星系边缘更遥远的较热气体所占据。这些较热气体边压缩边冷却，并流向星系。
The net result is a continuous flow of gas, starting as hot gases in intergalactic space and ending as a drizzle of cool gas called a "cooling flow," falling into the central galaxy.
最终的结果是一股持续的气体流，开始是星系间的热气体，结束时是一股被称为“冷却流”的少量冷气体，落入星系中央。
As gas pools, it turns into stars, whose outflows and explosions push material back out into intergalactic space-a process of negative feedback.
当气体集中形成恒星，所产生的喷流与爆炸会将物质向外推回星系际空间，这是一种负向的反馈机制。
As gas pools, it turns into stars, whose outflows and explosions push material back out into intergalactic space-a process of negative feedback.
当气体集中形成恒星，所产生的喷流与爆炸会将物质向外推回星系际空间，这是一种负向的反馈机制。
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