What’s wrong with 2020? Take stock of the rare astronomical phenomena this year
In 2020, a lot of bad things happened in the world. At the same time, during this period, many rare astronomical phenomena also occurred. Today, let’s take a look at the astronomical spectacle that happened in 2020.
Things have to start from the end of 2019. In the early morning of October 11, a Fire meteor appeared over Changchun, Jilin.
span>, illuminating the sky over the entire northeast. According to data from the NASA Near-Earth Object Research Center, the impactor is an Apollo or Atan-type asteroid with a diameter of about 2-4 meters. Scientists estimate that about 10 kg of meteorite reached the ground this time. An asteroid refers to a space rock with a diameter of 1 meter, so this impact can be called an asteroid impact event.
The time comes to January 2020. There are three major astronomical wonders in this month:one is the quadrant meteor shower, the other is the penumbral eclipse, and the other is the”daylight meteor.” On January 4, the spectacular quadrant meteor shower could reach 120 per hour. On January 11, the penumbral lunar eclipse was staged in the night sky. At this time, the moon entered the penumbra of the earth. We can feel the change in the brightness of the moon with a telescope. On January 17, a tourist photographed the real version of the”Day Meteor” in Puerto Rico. According to scientists, the probability of seeing a meteor during the day is very small, which is equivalent to winning the jackpot after buying three lottery tickets.
The time came in February, and it appeared one of the most familiar astronomical phenomena-Mercury retrograde. Mercury retrograde began on February 16 and did not end until March 9. In traditional Astrology, water rebellion is a symbol of doom, and people should avoid trying new things during this period. However, modern science has proved that the phenomenon of Mercury retrograde is a natural law and has nothing to do with superstition. There are differences in the orbital speeds of Mercury and Earth. From the perspective of Earth, sometimes Mercury will move forward, and sometimes it will move backward, so Mercury retrograde is a normal kinematic phenomenon.
In March, there were many asteroids leaping up close to Earth. On March 23, an asteroid numbered 2020 FL2 flew 144,000 kilometers away from Earth. The diameter of this asteroid is about 20 meters, which was first discovered by the Purple Mountain Observatory of the Chinese Academy of Sciences. Coincidentally, on the 25th, another five asteroids flew over the earth, and the largest diameter was 430 meters.
A heavy blow came at the beginning of April, and an asteroid blazed a flame over South Africa. But the good news is that scientists have observed that Sanju IV is bright again. It is a red star on the left shoulder of Orion. Last year, it was observed to start to darken, and scientists believe it became a precursor to supernova. Astronomy enthusiasts are very much looking forward to, because once it becomes a supernova, we can see a beautiful”firework show” in the sky, even in the daytime. However, it became brighter again, and scientists discovered that its darkening might be blocked by dust.
On June 21, circular solar eclipse passed Tibet, Sichuan, Guizhou, Hunan, and Jiangxi in turn , Fujian and Taiwan. This eclipse will not completely cover the sun, but will expose the outermost circle of the sun, commonly known as the ring of fire. June 25 is the traditional Chinese Dragon Boat Festival. This morning, when people were still immersed in a dragon boat race, an asteroid quietly approached the earth. This asteroid is about 8 floors in size.
In July, our long-awaited comet was finally visible to the naked eye. The comet named NEOWISE, numbered C/2020 F3, reached the perihelion on July 3. Last week, a few hours before dawn, it rose from the northeast. This week, we can already see its figure an hour and a half after sunset, it is under the Big Dipper. The comet that is visible to the naked eye is extremely rare. According to statistics, the average person can only see up to 4 in his life.