科技資訊:流星雨觀測小貼士
小編物語：總有一個心願，就是要帶她去看流星雨。但是，怎麼樣才能看到大片的流星呼嘯而過呢？趕緊去學習下吧~首先分享一個流星雨的微速視頻，以饗讀者。
What are meteor showers?
An increase in the number of meteors at a particular time of year is called a meteor shower.
Comets shed the debris that becomes most meteor showers. As comets orbit the Sun, they shed an icy, dusty debris stream along the comet's orbit. If Earth travels through this stream, we will see a meteor shower. Depending on where Earth and the stream meet, meteors appear to fall from a particular place in the sky, maybe within the neighborhood of a constellation.
Meteor showers are named by the constellation from which meteors appear to fall, a spot in the sky astronomers call the radiant. For instance, the radiant for the Leonid meteor shower is located in the constellation Leo.
什麼是流星雨？
每年某個時間定期發生的成羣流星叫做流星雨。
流星雨大多是彗星掉落的碎片形成的。彗星繞太陽運行時，在軌道上散下一種冰塵狀，成羣的碎片。地球經過這些成羣碎片的時候，我們就能看到流星雨。根據地球和碎片相遇的位置，流星雨似乎出現在天空的某個位置，大約是在鄰近星座的範圍內。
流星雨從哪個星座位置掉落，就以那個星座命名。這個位置在天文學上叫輻射點。例如，獅子座流星雨的輻射點就位於獅子座星羣。
What are shooting stars?
"Shooting stars" and "falling stars" are both names that people have used for many hundreds of years to describe meteors — intense streaks of light across the night sky caused by small bits of interplanetary rock and debris called meteoroids crashing and burning high in Earth's upper atmosphere. Traveling at thousands of miles an hour, meteoroids quickly ignite in searing friction of the atmosphere, 30 to 80 miles above the ground. Almost all are destroyed in this process; the rare few that survive and hit the ground are known as meteorites.
什麼是流星？
有些小天體或碎片，也就是流星體，闖入地球大氣層發生摩擦生熱，在天空形成耀眼的光芒，從而變成流星，也可稱作隕星。幾百年以來人們都是這麼稱呼流星的。流星體以1千英里的時速，在離地面30至80英里的上空，與大氣劇烈摩擦而迅速燃燒。幾乎大部分在這個過程中就已經燃燒殆盡。極爲少數還剩餘落到地面，變成隕石。
How can I best view a meteor shower?
If you live near a brightly lit city, drive away from the glow of city lights and toward the constellation from which the meteors will appear to example, drive north to view the Leonids. Perseid meteors will appear to "rain" into the atmosphere from the constellation Perseus, which rises in the northeast around 11 p.m. in mid-August.
After you've escaped the city glow, find a dark, secluded spot where oncoming car headlights will not periodically ruin your sensitive night vision. Look for state or city parks or other safe, dark sites.
Once you have settled at your observing spot, lie back or position yourself so the horizon appears at the edge of your peripheral vision, with the stars and sky filling your field of view. Meteors will instantly grab your attention as they streak by.
如何找到流星雨最佳觀測點？
如果你住在霓虹閃爍的城市裏，就得開車遠離城市，往流星雨輻射點的星座方向。例如，看獅子星座流星雨往北開。8月中旬英仙座流星雨從英仙座星羣方向“飛出”，而英仙星座在天空的東北方向，大約晚上11點出現。
遠離城市霓虹之後，找一個黑暗僻靜的觀測點。你微弱的夜視不會被偶爾來往車輛的車燈影響。儘量找國家或是城市公園，或是一些安全，黑暗的地方。
當你確定了觀測點後，平躺或是選擇一個合適的姿勢，使地平線納入你的外圍視線內。星星和天空要盡收眼底。流星飛過的時候，你會馬上就注意到的。
How do I know the sky is dark enough to see meteors?
If you can see each star of the Little Dipper, your eyes have "dark adapted", and your chosen site is probably dark enough. Under these conditions, you will see plenty of meteors.
如何確定天空的黑暗程度足以觀測到流星？
如果你能看到小熊座的所有星星，那麼你的眼睛就已經適應了黑暗，你選取的觀測點或許已足夠黑暗。這樣，你就能看到好多流星。
What should I pack for meteor watching?
Treat meteor watching like you would the 4th of July fireworks. Pack comfortable chairs, bug spray, food and drinks, blankets, plus a red-filtered flashlight for reading maps and charts without ruining your night vision. Binoculars are not necessary. Your eyes will do just fine.
NOTES Actual shower times can vary. Bright moonlight makes it difficult to see all but the brightest meteors.
觀測流星應該要帶什麼工具？
把看流星當做是看獨立日的煙花表演。帶上舒服的椅子，驅蟲液，食物和飲料，毛毯，還有手電筒，用來看地圖又不會影響你晚上的視線。不需要望遠鏡，用眼睛就行了。
注意：實際流星雨的發生時間有可能改變。月亮較亮的時候，很難看到流星，除了最亮的那些。
Added
Meteor Showers of the year
January 3: Quadrantids
April 21: Lyrids
May 5: Eta Aquarids
August 12: Perseids
October 8: Draconids
October 21: Orionids
November 17: Leonids
December 13:Geminids
流星雨時間表
1月3日左右： 象限儀座流星羣
4月21日左右： 天琴座流星羣
5月5日左右： 寶瓶座流星羣
8月8日左右： 英仙座流星羣
10月8日左右： 天龍座流星羣
10月21日左右：獵戶座流星羣
11月17日左右：獅子座流星羣
12月13日左右：雙子座流星羣
