What does super moon mean?

0 1 super moon is the phenomenon that the moon is at perigee at the new or full moon. When the moon is at perigee, a new moon will occur, which is called a super new moon. When the moon is at perigee, it happens to be a full moon, which is called a super full moon.

Supermoon refers to the largest and roundest moon that the naked eye can see when the distance between the moon and the earth is closer than usual at the new moon or full moon. This is because the moon revolves around the earth in an elliptical orbit, which is about 350 thousand kilometers recently and 400 thousand kilometers farthest. The gap of 50 thousand kilometers makes the moon look different in size. This word is not an astronomical term, but an American astrologer Richard? Noun put forward by Noel.

? Super moon? Before calculating the date, let's take a look at several periods of the moon:

The period of revolution of the moon is 27.32 days. However, the period of the first month of the moon is one month, with an average period of 29.53 days. The main difference between the two is that the former is worse than the distance traveled by the earth in this month. Suppose the moon starts to revolve between the earth and the sun (at this time, the moon phase is a new moon), and after 27.32 days, the moon revolves around the earth once. However, since the earth also rotates around the sun at a certain angle during this time, it will take another two days for the moon to rotate back between the earth and the sun and return the moon phase to the new moon. That is, the number of days between two new moons is 29.53 days. Similarly, the interval between two full moons is 29.53 days. According to the calendar, 14 lunar month is very close to 15 perigee month. That is, every time the moon experiences 14 full moons (that is, 14 in astronomy? Look at the moon, 4 13.4 days, which is roughly equivalent to1April of the lunar calendar. When 14 is the roundest, it passes through or approaches the perigee of 15 perigee month at the same time. That is to say, every 1 year, 1 month, 18 days, that is, every 4 13 days, we will meet like this? Super moon? . But sometimes, when the full moon is counted back and forth, it will appear near the moon point. In recent years, many people also call this full moon? Super moon? .

Many mainstream astronomers disagree? Super moon? 、? Super super moon? This title, because scientifically speaking, is called perigee full moon. When the full moon rises from the horizon, it seems that the moon we see is bigger and brighter than when it rises to the zenith. At this time, the perigee month is about 14% brighter than the apogee month (depending on meteorological conditions). But this change in size and brightness is actually not easy for the naked eye to detect.

Rumors about the super moon:

Like this every time? Super moon? Here we go. Is it circulated in cyberspace? Super moon? The sound that caused the disaster on earth. A frightening statement is: because of the distance between the earth and the moon? Too close? The increasing gravity of the moon will affect the plates of the earth, thus inducing large-scale natural disasters, such as earthquakes, volcanoes and tsunamis. Besides,? Super moon? It will also cause unusual weather on the earth.

Actually? Super moon? 、? Super super moon? In fact, its appearance is a relatively normal astronomical phenomenon, which is more repetitive and visible than other astronomical phenomena, and we can see it every year? Super moon? The emergence of.

After hundreds of millions of years of running-in, the earth and the moon have formed a stable earth-moon system, so even running to the perigee will not cause disaster to the earth. There is no evidence to support this conclusion at present.

Peter, an expert at the International Radio Astronomy Center? Wheeler also said,? Super moon? Has nothing to do with earthquakes and volcanic eruptions. Even if there are volcanoes and earthquakes, it is mainly because of the earth itself.

Researcher Zhao, the former director of Shanghai Observatory of Chinese Academy of Sciences and a famous astronomer, said: The distance between the earth and the moon does affect the tides of the earth, but earthquakes are plate movements within the earth. ?

Experts from the Institute of Geophysics, Seismological Bureau of China have studied the time series of catastrophic earthquakes with more than 1000 deaths since 1900 and large-scale volcanic eruptions with eruption index above 4: by mid-March, 1 1900 deaths with more than 1000 deaths,/kloc-. Super moon? There is no clear correspondence between them.

And some disasters, such as the Chilean earthquake and its huge tsunami, didn't happen in? Super Moon Year? 1955, but1960; 1976, the Tangshan earthquake that killed 240,000 people, the Wenchuan earthquake that killed more than 80,000 people in 2008, and the Haiti earthquake that killed more than 220,000 people in 20 10 did not happen in the so-called? Super Moon Year? .