仅事实
双重流星雨将于七月底达到峰值，带来罕见观天机会
摘要
南三角座δ流星雨和摩羯座α流星雨将于7月29日晚至7月30日凌晨同时达到峰值，可能每小时产生多达30颗流星。
天文爱好者将在7月30日凌晨有机会同时观测到两场流星雨达到峰值，分别是南三角座δ流星雨和摩羯座α流星雨。两场流星雨自7月中旬开始活跃，但它们同时达到峰值被认为是相对罕见的现象。
洛威尔天文台的行星天文学家尼克·莫斯科维茨表示，这两场流星雨合计每小时可能产生20至30颗流星。南三角座δ流星雨起源于宝瓶座，与彗星96P/Machholz有关，最佳观测地点在南半球，但其他地区也可见。其峰值预计在7月29日晚至7月30日凌晨，活动将持续至8月12日。
摩羯座α流星雨虽然通常较为稀少，每小时仅有几颗流星，但以产生明亮且移动缓慢的火球著称。该流星雨自7月12日开始活跃，将持续可见至8月12日。
美国宇航局建议观测流星雨无需特殊设备，但建议选择远离城市灯光的地点，并让眼睛适应黑暗以获得最佳观测效果。“在黑暗中不到30分钟，您的眼睛将适应并开始看到流星，”美国宇航局指出。最佳观测时间为午夜以后，北美地区的观测者被鼓励朝南方天空观测，以获得最佳观测南三角座δ流星雨的机会。由于月亮处于盈凸月相，月光仅约25%明亮，观测条件较为有利。
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Skywatchers will have the chance to observe two meteor showers peaking at the same time in the early hours of July 30, as the Southern Delta Aquariid and Alpha Capricornid showers reach their maximum activity.
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Both showers have been active since mid-July, but their simultaneous peak is considered a relatively rare event.
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According to Nick Moskovitz, a planetary astronomer at Lowell Observatory, the combined showers could produce between 20 and 30 meteors per hour.
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The Southern Delta Aquariid shower, which originates from the constellation Aquarius and is linked to comet 96P Machholz, is best viewed from the Southern Hemisphere but will be visible in other regions as well.
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Its peak is expected late on July 29 through the early morning of July 30, with activity continuing until August 12.
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The Alpha Capricornid shower, while generally less active with only a few meteors per hour, is known for generating bright, slow-moving fireballs.
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This shower has also been active since July 12 and will remain visible until August 12.
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