2019英仙座流星雨：如何觀看年度最佳流星雨

2019英仙座流星雨：如何觀看年度最佳流星雨

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.

你周末的亮點(diǎn)可能包括周日清晨跌跌撞撞地走出酒吧，但是——取決于你的位置——如果你選擇正確的時(shí)間離開(kāi)酒吧，你會(huì)在天空中看到一個(gè)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.

據(jù)美國(guó)國(guó)家航空航天局稱(chēng)，英仙座流星雨預(yù)計(jì)將于下周初達(dá)到高峰，時(shí)間為8月11日至8月13日。只要天空和周?chē)銐蚝诎担卑肭虻娜魏稳硕寄芸吹剿?。但觀看展覽的最佳時(shí)間將是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.

英仙座流星雨是一個(gè)恒星-星系的顯示，是由地球穿過(guò)快速的斯威夫特·塔特爾彗星的碎片引起的。每年8月，當(dāng)彗星經(jīng)過(guò)時(shí)，其碎片以每小時(shí)13.3萬(wàn)英里的速度進(jìn)入地球大氣層，導(dǎo)致明亮的閃光劃過(guò)天空。據(jù)VOX報(bào)道，英仙座的名字來(lái)源于英仙座的輻射。

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

英仙座流星雨什么時(shí)候出現(xiàn)，什么時(shí)候達(dá)到頂峰?

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.

一般來(lái)說(shuō)，每年的7月中旬到8月下旬，英仙座流星雨都會(huì)出現(xiàn)。今年，流星率達(dá)到每小時(shí)60多顆的峰值出現(xiàn)在8月12日至8月13日之間的夜晚。然而，尤其是在2019年，滿月的亮度將會(huì)阻礙能見(jiàn)度，使超過(guò)每小時(shí)60英里的峰值速度下降到每小時(shí)15到20英里。根據(jù)美國(guó)宇航局的說(shuō)法，這意味著觀看它們的最佳時(shí)間將是8月11日周日清晨。11日，月球?qū)⒃诹璩?點(diǎn)左右落下。這意味著在黎明前或太陽(yáng)開(kāi)始升起之前，要在大約一個(gè)小時(shí)的黑暗天空中才能看到流星。但在接下來(lái)的8月12日周一晚上，在月亮落下和太陽(yáng)開(kāi)始升起之間只有幾分鐘的黑暗天空。

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

英仙座流星雨與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，不僅因?yàn)樵诟叻迤陂g可見(jiàn)的閃光數(shù)量，而且因?yàn)橄募镜臏囟仁箲?hù)外觀看更加舒適。十二月份的雙子座流星雨也會(huì)發(fā)出明亮的閃光，在天空中快速移動(dòng)。但在黎明前觀看它們需要北半球的觀眾裹得嚴(yán)嚴(yán)實(shí)實(shí)以保持溫暖。