A lunar eclipse happens when the sun, Earth and moon all align so that the moon passes into the Earth's shadow. During a total lunar eclipse, like the one happening this March, the entire moon will fall within the darkest part of Earth's shadow. ...
Joe Rao
Partial lunar eclipse:During a partial lunar eclipse, only part of the moon enters Earth's shadow, which may look like it is taking a "bite" out of the lunar surface. Earth's shadow will appear dark on the side of the moon facing Earth. How much of a "bite" we see depends on how...
Best of WebLet’s Begin… On April 15, 2014, an extraordinary series of total lunar eclipses will begin in the United States. This series, called a lunar eclipse tetrad, will result in four red moons over the course of a year and a half. NASA explains the significance behind this pheno...
Joe RaoSPACE.com
Lunar nodes are the locations where the Moon crosses the Earth's orbital plane. Total lunar eclipses happen only when: It is Full Moon. At the same time, the Moon is at (or very near) a lunar node, so the Sun, the Moon, and the Earth are aligned in a straight (or nearly straigh...
As a result, the moon usually passes above or below Earth's shadow instead of through it. The next total lunar eclipse will take place on March 13-14, 2025, and will be best seen from North and South America, and glimpsed from parts of Europe and New Zealand. A composite of the ...
Lunar eclipse of the Blood Worm Moon Instead of being completely invisible and dark to the naked eye, the moon will take on a reddish glow, hence the nickname "blood moon." This occurs because of something called "Rayleigh Scattering." ...
You don’t need any special equipment to observe a lunar eclipse, although binoculars or a telescope will enhance the view and the red color. A dark environment away from bright lights makes for the best viewing conditions. The eastern half of the United States and all of South America will...
选项D:“when” 表示 “当…… 的时候”,既可以接短暂性动词,也可以接延续性动词。在这个句子中,“the lunar eclipse happened on 19th November” 是一个短暂性的动作,“I was walking in the park” 是一个延续性的动作。“when” 可以用于这种情况。所以,正确答案是D。