annular eclipse ,2012. 日環食

 "ring of fire" , May 20, 2012

Seen from a waterfront park in Yokohama, 在橫濱海濱公園見到 (Shuji Kajiyama/Associated Press)

 "ring of fire"「火環」 ,

Millions of Asians watched as a rare "ring of fire" eclipse crossed their skies early Monday. (Shuji Kajiyama/Associated Press)

 Tokyo May 21.  Issei Kato / Reuters

Texas. (David Kent/Fort Worth Star-Telegram/MCT

Philippines. (Bullit Marquez/Associated Press)

the western United States. (Steven Hausler/The Hays Daily News)

 north of Odessa, Texas. (Albert Cesare/Odessa American)

Monument Valley, Arizona. (Julie Jacobson/Associated Press)

 Nevada. (Cathleen Allison/Associated Press)

 Taipei, Taiwan. (Wally Santana/Associated Press)

Hong Kong. (Kin Cheung/Associated Press)

Huangpu River in Shanghai, China, May 21.  Aly Song / Reuters

 the Petroglyph National Monument near Albuquerque, New Mexico. 阿布奎基,新墨西哥州.

(Susan Montoya Bryan/Associated Press)

Tokyo. (Kyodo News)

 near Tokyo. (Shizuo Kambayashi/Associated Press)
Ring of Fire: rare eclipse crosses the skies | CLIK/HEAR | Multimedia, photography, video showcase of The Palm Beach Post
http://clikhear.palmbeachpost.com/2012/world-nation/space/ring-of-fire-rare-eclipse-crosses-the-skies/

(Reuters/Tony Huang) # 

 Original here.(CC BY Jay Cross) # 

Original here. (CC BY Martin Jambon) # 

Original here. (CC BY SA Flickr user ivva) # 

Original here.(CC BY SA Will Keightley) # 

 (AP Photo/Bullit Marquez) # 

Original here. (CC BY SA Ian Norman) 

 (Reuters/Pichi Chuang) # 

 (Masashi Hara/Getty Images) # 

 (Robyn Beck/AFP/GettyImages) # 

In Focus - A Ring of Fire: The 2012 Annular Eclipse - The Atlantic http://www.theatlantic.com/infocus/2012/05/a-ring-of-fire-the-2012-annular-eclipse/100301/

 (Ted Aljibeted Aljibe/AFP/GettyImages)

 (Aly Song/Reuters) #

. (Crystal Chatham/The Desert Sun) #

. (Toru Hanai/Reuters) #

 (Bullit Marquez/Associated Press) #

 Los Angeles, California, May 20, 2012 . (Joe Klamarjoe/AFP/GettyImages) #

 Papago Park in Phoenix, May 20, 2012. (Michael Chow/The Arizona Republic) #

at Sandia National Laboratories in Albuquerque, N.M. (Randy Montoya/Department of Engery) #

May 20, 2012 in Grand Canyon National Park, Arizona. (David McNew/Getty Images) #

Arizona, May 20, 2012. (Jason Lee/Reuters) #

 (AFP/GettyImages) #

 annular eclipse of the sun May 20, 2012.  Nageezi, Arizona. (Stan Honda/AFP/GettyImages) #

 May 20, 2012 in Grand Canyon National Park, Arizona. (David McNew/Getty Images) #

Ring of Fire Eclipse: 2012 - The Big Picture - Boston.com

http://www.boston.com/bigpicture/2012/05/ring_of_fire_eclipse_2012.html

Photograph: JAXA/NASA/Hinode via Getty Images
Eyewitness: annular eclipse | World news | The Guardian
http://www.guardian.co.uk/world/picture/2012/may/22/eyewitness-annular-eclipse?newsfeed=true

Seoul, South Korea. Yonhap / EPA
PhotoBlog - Sun, moon and Earth line up for spectacular 'Ring of Fire'
http://photoblog.msnbc.msn.com/_news/2012/05/20/11783332-sun-moon-and-earth-line-up-for-spectacular-ring-of-fire?lite

Cosmic Log - Solar eclipse goes social and global
http://cosmiclog.msnbc.msn.com/_news/2012/05/20/11776075-solar-eclipse-goes-social-and-global?lite
Panoramic image: Annular solar eclipse from Lassen Volcanic National Park in California.全景圖像：加利福尼亞州拉森火山國家公園的日環食。
http://photoblog.msnbc.msn.com/?nvo=0&16164228|a|nu|30|1|t|a|0=12
past solar eclipses going back to the 1920s. 追溯過去1920年的日食。
http://okok1111111111.blogspot.com/2012/05/past-solar-eclipses-going-back-to-1920s.html
http://msnbc.msn.com/id/32061783/displaymode/1247/?wbSlideShowId=32061783&wbSection=news#.T7rTcNwoRlF

A 本影區出現日全食。B 偽本影區出現日環食。C 半影區出現日偏食。

日全環食的成因（不依照實際比例）

日食(日蝕)是相當罕見的現象，日食分為四種，包括 total eclipse日全食、 annular eclipse日環食、hybrid eclipse 日偏食及partial eclipse全環食，其中較罕見的是全環食，只發生在地球表面與月球本影尖端非常接近的情形下

日食 - 维基百科，自由的百科全书

http://zh.wikipedia.org/wiki/%E6%97%A5%E9%A3%9F

Solar eclipse - Wikipedia, the free encyclopedia

http://en.wikipedia.org/wiki/Solar_eclipse