Today I will see "the youngest sun of the year"!Welcome the hottest period of the year

Science Fiction Network, July 4 (Wang Ziyu) According to the Zijin Mountain Astronomy of the Chinese Academy of Sciences, at 15:11 on July 4, the earth will pass through the orbit. This is the moment when the earth is the farthest from the sun in the year. At that time, people will be able to see the "smallest sun of the year", and it will also usher in the hottest period of the year.

According to Zijinshan staff, the orbit of the earth running around the sun is not a round, but an ellipse of 0.0167. Therefore, the distance between the sun and the earth is not fixed, from a distance of about 5 million kilometers from a distance and nearby. Every January is the most diameter of the sun every year. At this time, the sun passes through the recent point, and early July is the smallest time of the sun diameter of the sun in the year in early July.

This year, the time when the earth was running to a long distance was 15:11 on July 4th. At this time, the diameter of the sun was 31 minutes and 28 seconds, which was 3.4%smaller than the diameter of the sun visible to the sun on January 4 this year. As the earth reaches a long -distance point, it is about to usher in the hottest period of the year. It is expected that July 16 will be the time for this year.

Why is it far from the sun and the weather is hotter? In fact, the distance between the sun and the earth is not the main reason for seasonal changes. Because the seasonal changes are mainly affected by the corner of yellow red. Due to the existence of Huang Chijiao, the direct sunlight point will move between 23 degrees and 26 minutes north and south latitude. In the summer, the sunlight of the northern hemisphere is high, the light time is long, and the radiation energy received is mostly hot.

Experts remind that it is easy to cause eye burns with the naked eye or double telescope for a long time. If you want to observe, you can use the light reduction device or choose to watch the sunset in the evening. Be sure to pay attention to the protection of the eyes. Do not observe directly with naked eyes.

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