Human emotion, learning, thinking and other activities all depend on the work of designing precise neural network. Therefore, the mechanism of nerve fiber guidance has become a research hotspot in brain science. It not only helps to reveal the mystery of nerve development, but also provides a theoretical reference for the study of nerve injury and regeneration, and provides a new idea for the development and development of drugs conducive to nerve regeneration.
巨型圆环绕银河
Giant rings around the Milky way
近来,天文学家观测到一个由几亿乃至几十亿颗恒星组成的环缓慢围绕银河系旋转。这一新发现为银河系产生于大爆炸的观点提供了新的证据。
Recently, astronomers have observed a ring of billions or even billions of stars slowly circling the Milky way. This new discovery provides new evidence for the idea that the galaxy was born in the big bang.
目前看到的这个环还不完整,科学家将继续寻找其他部分,并研究其中恒星的温度、亮度、速度等。目前圆环的成因还不清楚,有科学家认为,其中的一些恒星有可能诞生于银河系内部,在漫长的年代里运行到了外缘;也有可能圆环是银河系附近一个小星系的残骸,该星系在银河系引力作用下被吞并。研究这个圆环的起源,有助于了解星系的演化过程。
At present, this ring is not complete. Scientists will continue to look for other parts and study the temperature, brightness and speed of stars. At present, the cause of the ring is not clear. Some scientists believe that some of the stars may have been born in the inner part of the Milky way and moved to the outer edge in a long period of time. It is also possible that the ring is the remains of a small galaxy near the Milky way, which is swallowed by the gravitation of the Milky way. Studying the origin of this ring will help us to understand the evolution of galaxies.
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