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抬头仰望星空,很多人会问:天上究竟有多少星星?现代最大的天文望远镜能看到10亿颗以上的星星。其实,天上星星的数目远不止这些。宇宙是无穷无尽的,现代天文学家所看到的,只不过是宇宙的很小很小的一部分。最近科学家发现,宇宙里的恒星总数可能是我们现在估计数值的3倍,也就是说,宇宙里有3×1023颗恒星,比地球上所有海滩和沙漠的沙粒总数还多,这大大增加了在地球以外的其他世界发现生命的可能性。
Looking up at the sky, many people will ask: How many stars in the sky? The largest modern astronomical telescope can see more than 1 billion stars. In fact, the number of stars in the sky is far more than these. The universe is endless. What modern astronomers have seen is only a small but very small part of the universe. Recently, scientists have found that the total number of stars in the universe may be three times our current estimate, which means that there are 3 × 1023 stars in the universe, more than the total number of sand on all beaches and deserts on earth, which greatly increased Discover the possibility of life in other worlds beyond the world.