3,840°K (更冷)


42,000°K (更熱)

B-V 色指數
開爾文(Kelvin, K)


太陽是太陽系中心的恆星。 它幾乎是完美的球形,由交織有磁場的熱等離子體組成。 它的直徑約為1,392,684公里,約為地球的109倍,其質量(約2×1030公斤,是地球的33萬倍)約佔太陽系總質量的99.86%。 化學上,太陽質量的約四分之三由氫組成,其餘大部分為氦。 其餘的(1.69%,仍然是地球質量的5628倍)由較重的元素組成,包括氧氣,碳,氖和鐵等。

The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields.[12][13] It has a diameter of about 1,392,684 km,[5] about 109 times that of Earth, and its mass (about 2×1030 kilograms, 330,000 times that of Earth) accounts for about 99.86% of the total mass of the Solar System.[14] Chemically, about three quarters of the Sun's mass consists of hydrogen, while the rest is mostly helium. The remainder (1.69%, which nonetheless equals 5,628 times the mass of Earth) consists of heavier elements, including oxygen, carbon, neon and iron, among others.[15]

Excerpt from Wikipedia.

製作及翻譯 JK
@Astronomy.hk 香港天文



香港天文正在加載銀河系 …