2019英仙座流星雨：如何观看年度最佳流星雨

2019英仙座流星雨：如何观看年度最佳流星雨

Your weekend highlights may include stumbling out of a bar early Sunday morning, but — depending on your location — if you time your exit right, you can see a real thrill in the sky.

你周末的亮点可能包括周日清晨跌跌撞撞地走出酒吧，但是——取决于你的位置——如果你选择正确的时间离开酒吧，你会在天空中看到一个真正的刺激。

The annual Perseid meteor shower is anticipated to peak early next week, from Aug. 11 to Aug. 13, according to NASA. It is visible to anyone in the Northern Hemisphere — as long as the sky and surroundings are dark enough. But the best time to view the display will come in the wee hours of Sunday, Aug. 11.

据美国国家航空航天局称，英仙座流星雨预计将于下周初达到高峰，时间为8月11日至8月13日。只要天空和周围足够黑暗，北半球的任何人都能看到它。但观看展览的最佳时间将是8月11日周日凌晨。

What is the Perseid meteor shower?

什么是英仙座流星雨?

The Perseid meteor shower is a stellar galactic display caused by the Earth passing through the debris of the passing Swift-Tuttle comet. As the comet passes each August, its debris enters the Earth’s atmosphere at about 133,000 miles per hour, resulting in brilliant flashes across the sky. According to Vox, the Perseids get their name by appearing to radiate from the constellation Perseus.

英仙座流星雨是一个恒星-星系的显示，是由地球穿过快速的斯威夫特·塔特尔彗星的碎片引起的。每年8月，当彗星经过时，其碎片以每小时13.3万英里的速度进入地球大气层，导致明亮的闪光划过天空。据VOX报道，英仙座的名字来源于英仙座的辐射。

When is the Perseid meteor shower and when does it peak?

英仙座流星雨什么时候出现，什么时候达到顶峰?

Generally, every year, some meteors from the Perseids are visible from the middle of July to late August. This year, the peak — or when meteor rates hit more than 60 per hour — comes on the night between Aug. 12 and Aug. 13. However, in 2019 in particular, the brightness of a full moon on those dates will obstruct visibility, taking the peak rate of more than 60 per hour down to 15 to 20 per hour. That means the best time to see them, according to NASA, will be the early morning hours of Sunday, Aug. 11. On the 11th, the moon will set around 3 a.m., which means roughly an hour of dark sky to see the meteors before pre-dawn or the sun begins to rise. But the following night, on Monday, Aug. 12, there will just be a few minutes of dark sky between the moon setting and the sun starting to rise.

一般来说，每年的7月中旬到8月下旬，英仙座流星雨都会出现。今年，流星率达到每小时60多颗的峰值出现在8月12日至8月13日之间的夜晚。然而，尤其是在2019年，满月的亮度将会阻碍能见度，使超过每小时60英里的峰值速度下降到每小时15到20英里。根据美国宇航局的说法，这意味着观看它们的最佳时间将是8月11日周日清晨。11日，月球将在凌晨3点左右落下。这意味着在黎明前或太阳开始升起之前，要在大约一个小时的黑暗天空中才能看到流星。但在接下来的8月12日周一晚上，在月亮落下和太阳开始升起之间只有几分钟的黑暗天空。

How does the Perseid meteor shower compare to other meteor showers?

英仙座流星雨与其他流星雨相比如何?

The Perseid shower stands out as one of the best meteor showers of the year, not only for the number of visible flashes during peak, but also for the summer temperatures that make outdoor viewing more pleasant. The Geminid meteor shower, in December, also delivers bright flashes that move fast through the sky. But viewing them in the pre-dawn hours requires Northern Hemisphere viewers bundle up to stay warm.

英仙座流星雨是一年中最好的流星雨之一，不仅因为在高峰期间可见的闪光数量，而且因为夏季的温度使户外观看更加舒适。十二月份的双子座流星雨也会发出明亮的闪光，在天空中快速移动。但在黎明前观看它们需要北半球的观众裹得严严实实以保持温暖。