In the hottest days of the northern hemisphere planet, it turns out, reaches a maximum distance from the Sun, which is available its orbit.
Moscow, July 4. Summer is coming to a peak, the heat grows stronger, and it may seem strange, but now our planet as far from the Sun.
In this Thursday, July 5, the so-called Earth reaches its apogee of its orbit — the most distant point from the Sun.
Each year, the Earth makes a journey of 152 million kilometers, about the same usually separates it from the star — about 150 million. But due to the fact that the planet's orbit is not ideal and is an ellipse, the planet occasionally have to move away from its star.
Closest approach to the Sun — the perigee — the Earth reaches the beginning of January. And at the height of the distance to the center of the sun, compared with a perigee reduced by 4,996,435 miles, or 3.28%. This also means that the Earth receives a 7% less solar radiation than at the point of convergence.
If you live in that region of the world where the heat begins in July, it would be a good question — why is moving away from the sun and getting a smaller amount of its radiation, the heat only grew.
Warm weather that comes in the summer and is usually worse in July, directly from the relative distance of the planet from the Sun is not connected. A key role in increasing the temperature on the surface of the Earth has a tilt of its axis — 23.5 degrees. As you know, at different times of the year the sun is above the horizon, different amounts of time, and the inclination of the axis depends on the angle at which the sun's rays reach the surface of the planet.
The exact dates of the apogee and perigee of the year to the range. Usually, the minimum distance to the period between 1 and 5 days of January, and the maximum — between 2 and 5 July. For example, last year the apogee came on July 4, and this — the 5th.