3. 从“A planet that is neither too hot nor too cold to sustain liquid water on its surface is generally considered to have the potential for life.” 可知,生命最重要的元素是液态水,B 正确。 4. 从“The reason is probably because no one was looking, de Wit said.” 可知,没发现绕超冷...
The star is just 0.05 percent as bright as our sun, but scientists say it could still give off enough radiation to warm all three planets so liquid water could exist on their surfaces.A planet that is neither too hot nor too cold to sustain liquid water on its surface is generally ...
Uranus’ basic circulation is parallel with its equator, as is the case on Jupiter and Saturn. The mass of the atmosphere and its capacity to store heat are so great that the alternating 42-year periods of sunlight and darkness have little effect. In fact, Voyager measurements show that the...
I.阅读理解AThe earth is the only planet that scientists thinkhas life. Why does the earth have life while the otherplanets(行星) don't? For one thing, the earth has justthe right temperature. As the third planet from thesun,the earth seems to be just the right distanceaway. The planet...
The planets are so close to the star that their surfaces are likely too hot to be habitable. That means the foursome are also not within the habitable zone of the star, or just the right distance from the star where liquid water can stably exist on the surface of the planet. ...
Lessan31Lif e on Other Planets Chris Oxlade1Th e Earth is on e member of a family of planets that orbit th e Sun, which is our local Hstar. Th e Sun, th e planets and th e moons SCIENCE OLVE that orbit th e planets, ar e known as th e Solar TH E MYSTERY O System. Th ...
金星和地球通常被视为是双行星,但不是同卵双胞胎。 3.Venus and Earth are similar in size and mass, so Venusian volcanoes may well have outgassed as much water vapor as on Earth, and bothplanetswould have had about the same number of comets strike their surfaces. (阅读 托福-11)您的浏览器...
In order to successfully send humans into space we would need to build a vehicle that can not only carry humans, but also have enough food and water to keep them alive for the duration of the trip.Moreover, robots have no problems working for hours on end. Robots never complain. They ...
Each planet in our solar system is unique, but they all have a few things in common, too. For example, every planet has a north and a south pole. These points are in the center of the planet at its ends. A planet's axis is an imaginary line that runs through the center of the ...
Jupiter’s moons Europa and Ganymede have subsurface oceans that have conditions with the potential to support life. Saturn Saturn, also known as the ringed planet, is the sixth planet from the sun and the second-largest planet. Saturn is pale yellow due to ammonia crystals in its upper atmos...