On the 20th, a ball of light was seen flowing down over a wide area such as Kanto and Kinki.
Experts analyze that it is a phenomenon called a "fireball" that glows when fragments of asteroids burn out in the atmosphere.
After 8:30 pm on the 20th, there was a series of sightings on SNS that something like a ball of light flowed down the sky in the Tokai and Kinki regions, mainly in the Kanto region.
Even with the camera installed on the roof of NHK Osaka Broadcasting Station in Chuo-ku, Osaka, you can see the ball of light flowing down for several seconds at the same time.
According to Mr. Daichi Fujii, a curator of the Hiratsuka City Museum in Kanagawa Prefecture, who specializes in astronomical science, it is a phenomenon called a "fireball" that glows particularly strongly when fragments of asteroids enter the atmosphere and burn out.
In the video taken by Mr. Fujii in Hiratsuka City, a fireball appears in the northern sky, and it becomes brighter and falls.
In addition, the camera installed by Mr. Fujii in Fuji City, Shizuoka Prefecture, also shows the fireball falling while shining brightly.
Mr. Fujii says, "It seems that the speed was relatively slow compared to a normal shooting star, but the brightness is about the moonlight, which is quite bright."