仅事实
晴朗天空为东圣地亚哥县观赏英仙座流星雨提供良机
摘要
英仙座流星雨预计将在圣地亚哥县的内陆和东部地区可见，峰值活动将在8月12日晚至8月13日凌晨出现，但月光可能会限制能见度。
预计至少到下周中旬，夜间天气将保持晴朗，为在圣地亚哥县观赏年度英仙座流星雨提供有利条件。此次流星雨的峰值将在8月12日晚和8月13日凌晨出现，但美国宇航局指出，由于月亮约有84%的光照，届时能见度可能会受到限制。
最佳观测地点位于县内的东部山麓、山区和沙漠地区，这些地方光污染较少，视野更广阔。流星可以出现在地平线以上的任何位置，尽管许多观测者更喜欢面向东北方向，朝向英仙座星座。最佳观测时间为午夜至黎明前，专家建议让眼睛适应黑暗20至30分钟。
流星活动是由斯威夫特-塔特尔彗星的冰尘进入地球大气层并燃烧引起的。由于沿海社区光污染严重且夜间可能出现至少700英尺深的海洋层，国家气象局预计在沿海地区观测将较为困难。
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Partly Confirmed
Clear nighttime conditions are forecast through at least the middle of next week, providing favorable circumstances for observing the annual Perseid meteor shower in San Diego County.
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Confirmed
The event will reach its peak late on August 12 and in the early hours of August 13, but NASA notes that visibility may be limited at that time due to the moon being about 84 percent illuminated.
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The best viewing locations are in the county's eastern foothills, mountains, and desert areas, where there is less light pollution and a broader view of the sky.
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Meteors can appear anywhere above the horizon, though many observers prefer to face northeast toward the constellation Perseus.
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The optimal viewing window is from midnight to just before dawn, and experts recommend allowing 20 to 30 minutes for eyes to adjust to the darkness.
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Meteor activity is caused by ice and dust from Comet Swift-Tuttle entering Earth's atmosphere and burning up.
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Unverified