“The smallest sun of the year” will appear tomorrow, why the sun is far away and the weather is hot? -Sun, astronomy, heat–Fast Technology (the media of Drive House)–Technology changes the future

At 15:11 on July 4, the earth will reach its orbital aphelion, and people will see a round of “the smallest sun of the year”.

Because the orbit of the earth around the sun is not a perfect circle, but an ellipse, the distance between the sun and the earth is not fixed. The Earth passes the slowest at aphelion and the fastest at perihelion, so the length of the intervals between the seasons is not equal.

For example, from the 2021 equinox to the 2022 equinox, a total of 178 days, 20 hours and 12 minutes will pass, and from the 2022 equinox to the 2022 autumn equinox, a total of 186 days, 9 hours and 31 minutes will pass.

As the Earth reaches its orbital aphelion, at the same time,This year’s ambush time is July 16, which means the hottest period of the year is approaching.

So the question is, why the sun is far away and the weather is hot? Astronomical science experts from the Chinese Academy of Sciences will reveal the secrets for you.

turn out to be,Because the change of the distance between the sun and the earth is not the main reason for the seasonal changes, the seasonal changes are mainly affected by the angle of the yellow-red crossing.Due to the existence of the yellow-climb angle, the direct point of the sun on the earth moves between 23 degrees 26 minutes north and south latitudes. In summer, the northern hemisphere has a high angle of sunlight, a long period of illumination, and receives a lot of radiant energy, so it is the hottest.

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