[:ja]米海洋大気庁NOAAの太陽表面観測衛星DSCOVRによって撮影された、月と地球の画像です。DSCOVRは地球から150万km離れたラグランジュ第1点という、太陽、地球、DSCOVRの重力が釣り合い位置関係が変わらない点にいます。地球と月の距離は38万kmですから、その約4倍離れた場所からの撮影です。
DSCOVRと地球の間を月が通るのは、年に2度しかないので、非常にレア・ショットです。ちなみに、太陽、地球、DSCOVRの位置関係は、DSCOVRに搭載された地球多色画像カメラEPICのサイトで確認できます。
ちなみに月の影が地球を横切る所謂「部分地球食」もあり、こちらもDSCOVRが2016年3月11日に撮影した珍しい画像です。
ウェブ地球儀で地球俯瞰画像を見る： LiVEARTH
[Earthview Wonders] No.33: Moon Photobombing on Earth
NOAA’s Earth observation and space weather satellite DSCOVR captured this rare, epic Moon-in-front-of-Earth photo. DSCOVR is located at Lagrange Point (L1) where gravity of the Sun, the Earth and DSCOVER is balance and DSCOVER’s location be static. L1-Earth is 1,500,000km which is approximately 4 times that of Moon-Earth (380,000km).
Moon passes between DSCOVR and Earth only twice a year and this photo is a rare shot. Positional relationship between Sun, Earth and DSCOVER can be confirmed at NASA’s EPIC site.
In addition, this is another rare, epic view of the moon as it moved in front of the sunlit side of Earth, captured by DSCOVR on March 11, 2016.
See earthview photo gallery with web-globe: LiVEARTH[:en]NOAA’s Earth observation and space weather satellite DSCOVR captured this rare, epic Moon-in-front-of-Earth photo. DSCOVR is located at Lagrange Point (L1) where gravity of the Sun, the Earth and DSCOVER is balance and DSCOVER’s location be static. L1-Earth is 1,500,000km which is approximately 4 times that of Moon-Earth (380,000km).
Moon passes between DSCOVR and Earth only twice a year and this photo is a rare shot. Positional relationship between Sun, Earth and DSCOVER can be confirmed at NASA’s EPIC site.
In addition, this is another rare, epic view of the moon as it moved in front of the sunlit side of Earth, captured by DSCOVR on March 11, 2016.
See earthview photo gallery with web-globe: LiVEARTH[:]