NASAさんのインスタグラム動画 - (NASAInstagram)「Knock knock. Who’s there? Not the Sun for about 2 minutes…🌑👑 On Monday, Dec. 14, the first and only total eclipse of 2020 occurred. Parts of South America including Argentina and Chile plunged into darkness as the Moon swept across a daytime sky and fully covered the sun’s disk, briefly blocking out the entire body of the sun except its outermost layer, known as the “corona”. The shadow cast by an eclipse consists of the completely darkened umbra and the partially shadowed penumbra. For people who stood within the umbra on December 14, the Moon blocked the disk of the Sun for about 2 minutes, and the much dimmer solar corona and its streamers became visible to the naked eye. The time-lapse video shown here includes 72 crisp images acquired every 10 minutes between 3a.m. to 3p.m in southern Chile captured by The Advanced Baseline Imager (ABI) on the Geostationary Operational Environmental Satellite 16, which flies at about 22,000 miles altitude over the equator. So, when is the next one you ask? The next total solar eclipse visible over South America will be on Saturday, Dec. 4, 2021. This means you have plenty of time to grab some eclipse glasses and/or Sun Funnels for safe viewing! Credit: @NASAEarth Observatory video and images by Joshua Stevens, using GOES 16 imagery courtesy of @NOAA and the National Environmental Satellite, Data, and Information Service (NESDIS). #NASA #SolarEclipse #SouthAmerica #Argentina #Chile #Moon #MoonDay #TBT #Universe」12月18日 2時27分