A Perseid meteor streaks across the sky on August 13, 2015 in the Spring Mountains National Recreation Area, Nevada. The annual display, known as the Perseid shower because the meteors appear to radiate from the constellation Perseus in the northeastern sky, is a result of Earth's orbit passing through debris from the comet Swift-Tuttle.
Cover 圖片來源/Getty Images
A Perseid meteor streaks across the sky on August 13, 2015 in the Spring Mountains National Recreation Area, Nevada. The annual display, known as the Perseid shower because the meteors appear to radiate from the constellation Perseus in the northeastern sky, is a result of Earth's orbit passing through debris from the comet Swift-Tuttle.

在七夕情人節前夕還能夠看到壯觀的流星雨,未免也太浪漫了吧!

俗話說只要看見流星雨、並對著它許願,你的願望極有可能會成真,所以亦有人認為如果稍縱流逝的流星雨出現在你眼前,象徵幸運女神即將降臨。一年四季有各式各樣的天文奇景,其中從 4 月到隔年 1 月都有機會看見流星雨,然而進入 8 月後,最令大家期待的就屬「英仙座流星雨」(Perseids)了!

延伸閱讀:花 6 億遊太空,富豪與巨星都說超值得?Tatler 教你 5 步驟預定一場太空旅遊

Tatler Asia
USAK, TURKEY - DECEMBER 13: Meteors named as 'Geminid' streak across the sky over Turkey's Usak on December 13, 2017. (Photo by Soner Kilinc/Anadolu Agency/Getty Images)
Above 圖片來源/Soner Kilinc/Anadolu Agency,Getty Images
USAK, TURKEY - DECEMBER 13: Meteors named as 'Geminid' streak across the sky over Turkey's Usak on December 13, 2017. (Photo by Soner Kilinc/Anadolu Agency/Getty Images)

英仙座流星雨與 1 月的「象限儀座流星雨」、12 月的「雙子座流星雨」並列為年度三大流星雨,歷史上最早的觀測記錄是公元 36 年,每年在 7 月 20 日至 8 月 20 日前後是活躍期,大約於 8 月 13 日會有非常可觀的數量。

一年中暑期的夜間氣溫最高,比較容易觀測流星雨,有時候用肉眼即可看見。根據臺北市立天文科學教育館發布的消息,今年的英仙座流星雨於 8 月 12 日至 8 月 13 日間來到高峰期,由於輻射點來到仰角(仰角意味著輻射點越高),每小時天頂流星數為 100 顆、以每秒 58 公里的速度流逝,預計從晚間 10 點至凌晨 4 點會出現最可觀的景象。

Tatler Asia
SAD HILL, CONTRERAS, SPAIN - JULY 25: (EDITOR'S NOTE: The image has been created with photographs in a multiple exposure) Meteors along the Milky Way en the sky on July 25, 2020 in Sad Hill, Contreras, Spain. Perseids can be seen between the days of July 17 to August 24 of each year. The most optimal day is August 11. (Photo by Samuel de Roman / Getty Images)
Above 圖片來源/Samuel de Roman,Getty Images
SAD HILL, CONTRERAS, SPAIN - JULY 25: (EDITOR'S NOTE: The image has been created with photographs in a multiple exposure) Meteors along the Milky Way en the sky on July 25, 2020 in Sad Hill, Contreras, Spain. Perseids can be seen between the days of July 17 to August 24 of each year. The most optimal day is August 11. (Photo by Samuel de Roman / Getty Images)

英仙座的流星速度相當快,相較於其他流星雨,在流逝的過程中比較明亮,伴隨的火球也多了一些,甚至容易形成流星痕,在正常的氣候情況都有機會觀測到。

想要親眼見證流星雨劃破天際的景象,中央氣象局表示雲多或降雨機率高的地區較不容易看見,北部可以選擇光害少且視野廣闊的地點(如陽明山)。若待在家中也可以觀測,臺北天文館以線上直播的方式,透過架設星空攝影機讓宅在家的我們能夠一覽絕美又夢幻的流星雨!

延伸閱讀:墾丁貓鼻頭露營莊園「微解封」後新開幕,5 大看點整理

Topics