Earth reaches farthest point from Sun, solar apparent diameter decreases
Earth will reach its farthest point from the Sun next week, causing the Sun to appear smallest. This coincides with the start of the "Minor Heat" solar term.
On July 7th, Earth will reach aphelion, the point in its orbit farthest from the Sun. This astronomical event will cause the Sun to appear at its smallest apparent diameter of the year for observers on Earth.
The difference between Earth's closest approach to the Sun (perihelion) and its farthest point (aphelion) is approximately 5 million kilometers. Perihelion typically occurs in early January, while aphelion occurs in early July.
This year, the timing of aphelion coincides with the beginning of "Minor Heat" (Xiao Shu), one of the 24 traditional Chinese solar terms. While the Sun's apparent size changes due to Earth's orbital position, its actual physical size and temperature remain unaffected.
It is crucial to note that direct observation of the Sun with the naked eye can cause severe eye damage due to its intense heat and radiation. Safe viewing methods include using certified solar viewing glasses or observing the Sun's reflection in a bowl of water.