十万个为什么·科学阅读30篇（6）
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Why Do We See Stars at Night but Not in Day?
为什么白天看不到星星，晚上却能看到？
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Stars shine day and night, just like the sun.星星昼夜闪烁，就像太阳一样。
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But sunlight is much brighter than starlight.但阳光比星光亮得多。
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Daytime sky glows due to scattered sunlight.白天的天空因散射的阳光而发亮。
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This bright blue light hides faint starlight.这明亮的蓝光掩盖了微弱的星光。
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At night, the sky turns dark and quiet.夜晚，天空变得黑暗而宁静。
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No sunlight scatters, so stars become visible.没有阳光散射，星星便清晰可见。
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Bright planets like Venus or Jupiter can sometimes appear at dusk.金星或木星等明亮行星有时会在黄昏出现。
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Telescopes help us see even more stars clearly.望远镜能帮我们更清晰地看到更多星星。