NASA scientists believe Saturn to be made up mostly of swirling layers of gas with a small iron and rock core--though its strangest feature is a sticky layer of compressed gas. From the core outward, NASA scientists believe, Saturn is composed of several identifiable layers. Ammonia, methane ...
根据第七段第一行“Saturn is surrounded by bigger rings than any other planet. They are made of ice, dust and rock.”(土星被比其他任何行星大些的环所包围。它们由冰、尘埃和岩石组成。)可知土星的光环主要由冰、尘埃和岩石三种物质组成,故C项正确。D项,在天王星上有强风和风暴。根据倒数第四段整段...
satellites, shooting stars and UFOs. If they are above the horizon, you should be able to identify Mars, Jupiter, Saturn and – if you have good eyes – Uranus, but no matter how much you look, you won't find Venus, even if there's no moon and the sky is completely clear...
Mercury's core is thought to be made of molten nickel-iron with a mantle of solid rock and a surface of loose rocks and dust. Information about Mercury's composition is based on data from the spacecraft Mariner 10, launched in 1973, and the probe MESSENGER, the mission for which ran fr...
Earth's surface is 71% water, supporting a wide range of marine and terrestrial life. 12 Saturn A gas giant known for its extensive ring system and numerous moons. Saturn's rings are made up of ice and rock particles and are visible from Earth with a telescope. 12 Earth Composed mainly...
related what is in the middle of saturn? updated april 24, 2017 by charles clay the gas giant neptune was named for the roman god of the sea due to its bright blue color. although this coloration was later discovered to be an artifact of the methane in the outer atmosphere rather than ...
mercury, venus, mars, jupiter, and saturn . the other two: uranus and neptune were discovered only after telescopes were invented. the first four planets are made of rock with inner cores made of metal and are called rocky planets. the next four are made of gasses like hydrogen and ...
What was it like when human beings transformed the Earth? What was it like when humans first arose on planet Earth? What was it like when mammals appeared and thrived? What was it like when life on Earth became complex? What was it like when Venus and Mars both died? What was...
As you know, it’s believed that Saturn, and all the planets in our solar system coalesced from a swirling cloud of gas some 4.8 billion years ago.However, if the rings are made of leftovers from that process, then they'd also be about 4.8 billion years old.The problem is that anythin...
Without the intervention of Saturn, Jupiter would have ended up in the zone where Earth now is. Earth would never have formed, and we would not be here.如果没有土星的介入,木星可能最后会在现在地球所在的区域。那么地球就不会形成,我们也不会在这里了。Our planet was luckier than its future ...