In our own solar system, Mercury, Venus, Earth, and Mars are rocky planets, while Jupiter and Saturn are gas planets. The surface temperature of a planet depends on the solar flux it receives from its star but also depends upon its atmosphere. Present-day Venus, for example, receives 1.9...
Mercury experiences extreme temperature variations, from 800 degrees Fahrenheit during the day to -290 degrees Fahrenheit at night. Unlike other planets in our solar system, Mercury does not have any moons or rings. Mercury has a very thin atmosphere composed mostly of oxygen, sodium, hydrogen, h...
以lack of gases and ices做关键词定位至倒数第二句，这句话只是单纯说现象，最后一句才是解释，而且这句话刚才已经讲过，说由于距离太阳近，类地行星最终失去了这些气态物质，所以答案是A。其余答案均与本段首句说反。
One helpful thing is that when people learn the names of the planets, they usually learn them in order from innermost to outermost, that is, in order of increasing distance from the sun. If you have a hard time recalling the names of the planets in order with no other context, a memori...
S., 1990. Temperature and circula- tion in the stratosphere of the outer planets. Icarus 83, 255-281.Conrath, B. J., P. J. Gierasch, and S. S. Leroy, Temperature and circulation in the stratosphere of the outer planets, Icarus 83, 255-281, 1990....
Planets in Our Solar SystemLook at the four squares [] that indicate where the following sentence could be added to the passage.如果对题目有疑问，欢迎来提出你的问题，热心的小伙伴会帮你解答。
order D.giving examples 【小题】Planets like Proxima b are referred to as " Goldilocks planets" because of ___ . A.the presence of water B.their temperature C.the life on them D.their size 【小题】We can infer from the last paragraph that ___ . A.the long distance will prevent as...
The averagetemperature on Venus' surface is 900 F (465 C). At 92 bar, the pressure at the surface would crush and kill you. And oddly, Venus spins slowly from east to west, the opposite direction of most of the other planets.
Also, because the molecular motion of a gas depends on temperature, at the low temperatures of the Jovian planets even the lightest gases are unlikely to acquire the speed needed to escape. On the other hand, a comparatively warm body with a small surface gravity, like Earth's moon, is ...
Scientists believe the new planet has a rocky surface and is similar in size to Earth. More importantly, they’ve determined that the distance between Proxima b and its “sun” gives the planet a similar temperature to Earth’s. This means it could have liquid water. The presence of water...