2020年日全食

2020年日全食

ByNASA中文

2021年01月07日 Total Solar Eclipse 2020 Image Credit & Copyright: Miloslav Druckmuller, Andreas Moller, (Brno University of Technology), Explanation: Along a narrow path crossing southern South America through Chile and Argentina, the final New Moon of 2020 moved in front of the Sun on December 14 in the year’s only total solar eclipse. Within about 2 days of perigee, the closest point in its elliptical orbit, the New Moon’s surface is faintly lit by earthshine in this dramatic composite view. The image is a processed composite of 55 calibrated exposures ranging from 1/640 to 3 seconds. Covering a large range in brightness during totality, it reveals the dim lunar surface and faint background stars, along with planet-sized prominences at the Sun’s edge, an enormous coronal mass…

天空的钻石

天空的钻石

ByNASA中文

2020年12月18日 Diamond in the Sky Image Credit & Copyright: Mariano Ribas (Planetario de la Ciudad de Buenos Aires) Explanation: When the shadow of the Moon raced across planet Earth’s southern hemisphere on December 14, sky watchers along the shadow’s dark central path were treated to the only total solar eclipse of 2020. During the New Moon’s shadow play this glistening diamond ring was seen for a moment, even in cloudy skies. Known as the diamond ring effect, the transient spectacle actually happens twice. Just before and immediately after totality, a thin sliver of solar disk visible behind the Moon’s edge creates the appearance of a shiny jewel set in a dark ring. This dramatic snapshot from the path of totality in northern Patagonia, Argentina captures…