Astronomy Picture of the Day
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
August 24, 1998
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
August 24, 1998
說明：上星期六東半球 的某些地方可以看到日環食(annular eclipse of the Sun) 。上圖是利用攝影機拍下的日環 食蝕景象，拍攝的地點是位於馬來西亞東海岸的豐盛港 (Mersing) 。影像是昨天才從吉隆坡 (Kuala Lumpur) 那裡的網路咖啡店傳送到APOD的 。日環食是發生在月球的視角大小略小於太陽的時候。當月球擋在太陽前面時，太陽的邊緣仍然可以看見。環食環 (solar ring)和月球表面比起來亮許多，所以在圖上月球看起來是黑色的。太陽與月球的視角大小會有些微的變化，是因為月球與地球的公轉軌道是橢圓軌道。而日全食會發生在月球比較靠近地球的時候。
Authors & editors:
Robert Nemiroff
(MTU) &
Jerry
Bonnell (USRA)
NASA Technical Rep.:
Jay Norris.
Specific rights apply.
A service of:
LHEA
at
NASA/
GSFC
&:
Michigan Tech. U.