once had flowing water, but numerous flybys, orbiters and landers have confirmed one undeniable fact -— any liquid (液体的) water that was once on its surface is now long gone.One idea, the Mars Ocean Hypothesis,
通读全文,并结合第一段“Researchers say they have discovered new evidence that Mars once had a large northern ocean. The finding adds to existing evidence that ancient Mars had the right conditions to possibly support some form of life.(研究人员表示,他们发现了新的证据,证明火星曾经有一个巨大的...
The thing that's really cool is that 18degrees is not particularlt cold or particularly hot.Knowing the temperature of Mars is crucial to understanding the planet's history-its past climate,and whether it once had liquid water.先翻译这三段吧,语序要通顺哦,不要上网页翻译的. 扫码下载作业帮搜索...
NASA data suggests there’s liquid water deep beneath Mars’ surface Tom Hawking 4-billion-year-old mineral offers clues about Mars’ steaming hot past Laura Baisas Mars was icy and wet billions of years ago, new study suggests Tom Hawking ...
The research team noted that the greatest significance of this discovery is expanding the evidence of Martian liquid water from the sparsely-populated polar regions to the more human-friendly middle and low latitudes. If there was once an ocean here, then with climate change, a large amount of...
“As the rocks are altered by liquid water, water molecules become incorporated(吸收) into minerals like clays."The dat a and simulations indicated that the water on Mars was almost all gone by 3 billion years ago, around the time on the Earth when life consisted of single-cell microbes ...
changing符合 题意,故选C。 57 C 细节理解题。根据第三段内容和第四段中的”there had to have been a period when it was warm enough and the atmosphere(大气层) was thick enough to support this much liquid (液态的)water at one time"可知,35亿年前火星可能存在液态 水。故选C。 反馈 收藏 ...
A studyfound evidence suggesting there is a large reservoir of liquid water under the surface of Mars, within fractured igneous rocks. Any evidence of the reservoir on the surface could have been erased or distorted by billions of years of wind erosion or other geological processes. ...
Curiosity has also found evidence that liquid water was once present in the same region where the compounds were found, called Yellowknife Bay. Samples taken from the area, which appeared to be an ancient lakebed, showed the presence of clay minerals which form in water, meaning that there li...
NASA rover photographs visible auroras on Red Planet for the first time Scientists find hint of hidden liquid water ocean deep below Mars' surface NASA Mars satellite uncovers markings 'like paint dripping down a wall' on Martian surface Mysterious, out-of-place 'Skull' rock on M...