10 個太空常識

10 個太空常識
1. 太空有烤肉和金屬的味道。從外太空返航的太空人形容他們太空服的氣味是烤肉、金屬和焊接煙霧的混合物。
2. 有「漫遊」的行星。銀河系中有數百萬顆行星沒有依附在恆星上，只是在太空中漂流。
3. 金星上有酸雨。金星的大氣層主要由二氧化碳組成，雲層中含有硫酸，會在金星表面造成毒性極高的酸雨。
4. 黑洞會「唱歌」。黑洞周圍旋轉的氣體會發出振動，這些振動可以轉換成音波。已知最低的音調比第一個八度低 57 個八度！
5. 月球上有足跡會持續數百萬年。由於缺乏大氣層和侵蝕，太空人的腳印幾乎是永恆不變的。
6. 它可以在木星和土星上下鑽石雨。它們大氣層中的壓力會把碳變成鑽石晶體向下掉落。
7. 太陽佔太陽系質量的 99.86%。太陽的質量是如此巨大，以至於它的引力把所有行星、小行星和彗星都吸附在一起。
8. 金星上的一天比一年還長。金星以它的軸心自轉的速度非常慢，一圈的時間比繞太陽轉一圈還要長。
9. 太空中有酒精。在人马座 B 星云中，他们发现了大量的乙醇，有几百亿升。
10. 銀河將與仙女座相撞。40-50億年後，這兩個星系將開始融合，形成一個新的、巨大的星系。

10 space facts
1. Space smells like barbecue and metal. Astronauts returning from outer space describe the smell of their spacesuits as a mixture of burnt meat, metal, and welding fumes.
2. There are "roaming" planets. There are millions of planets in the galaxy that are not attached to stars and just drift through space.
3. There is acid rain on Venus. Venus' atmosphere is made up mostly of carbon dioxide and the clouds contain sulfuric acid, causing extremely toxic rains on the surface.
4. Black holes can "sing." The gas swirling around a black hole emits vibrations that can be converted into sound waves. The lowest tone known is 57 octaves lower to the first octave!
5. There are footprints on the moon that will persist for millions of years. Because of the lack of atmosphere and erosion, astronaut footprints are virtually eternal.
6. It can rain diamonds on Jupiter and Saturn. The pressure in their atmospheres turns carbon into diamond crystals that fall downward.
7. The Sun occupies 99.86% of the mass of the solar system. It is so massive that its gravity holds all the planets, asteroids, and comets together.
8. A day on Venus is longer than a year. Venus rotates on its axis so slowly that one revolution lasts longer than a complete revolution around the Sun.
9. There is alcohol in space. In the Sagittarius B nebula, they found huge amounts of ethyl alcohol, which is tens of billions of liters.
10. The Milky Way will collide with Andromeda. In 4-5 billion years, the two galaxies will begin to merge, creating a new, huge galaxy.