日全食

There is an appointment in the starry sky: There is an "invisible protagonist" behind the total solar eclipse and meteor shower - from 10 am to 12 am on August 13, the Perseid meteor shower, one of the three major meteor showers in the northern hemisphere, will have its peak. Before that, on the day side of the earth, Iceland, Spain and other places will stage a spectacular total solar eclipse. At almost the same time period, the earth's day and night sides are chasing the solar eclipse on one side and watching the meteors on the other side, which is a spectacle. What’s even more interesting is that behind the two major celestial phenomena is the same “invisible protagonist” – the moon. Why can the same moon "contribute" to both a solar eclipse and a meteor shower? Wang Kechao, director of science popularization at the Purple Mountain Observatory of the Chinese Academy of Sciences, said that in the "sky-covering drama" of a total solar eclipse, the moon is of course the "protagonist." When a total solar eclipse occurs, the moon happens to move between the sun and the earth, and the three are approximately aligned in a straight line. Viewed from within the total eclipse zone, the moon is completely...