关于火星的英语作文
关于火星的英语作文
英语人气:692 ℃时间:2020-01-06 21:51:49
优质解答
Interplanetary robot Mars fascinates scientists because of its similarity to Earth, and it fascinates the public because our myth of 'Martians' is a vision of life beyond Earth. The Mars adventure continues with the launch of a robot vehicle by UK scientists. It's part of project to build an 'autonomous robotic scientist' to explore the Martian surface and is key to the European Space Agency's 2011 ExoMars mission.The six-wheeled vehicle housing a myriad of scientific instruments and detectors is the Mars rover, nicknamed 'Bridget'. Astrium, an EADS company, are developing the ExoMars rover prototype and coordinating its technologies with other UK-based institutions.Test bed to prove the rover's stamina Searching for a terrain similar to that found on Mars, the team took the rover to El Teide National Park in Tenerife. Lester Waugh, leading the EADS Astrium team, explains, 'The rover's not waterproof so we need good weather to test it in, but also the conditions need to be dry as any moisture affects the way the sand reacts under the wheels.'Solar panels will supply power and radioisotope heater units will help it withstand the extreme cold on Mars. The team is optimizing the performance of the wheels, suspension, the drive system, so it doesn't dig itself in on tricky terrain.Taking up to twenty minutes for radio signals to reach Earth demands a powerful navigation system to allow the rover to operate solo so they are also developing next generation computer software capabilities.Maximizing productive science time The rover will land on Mars packed to capacity with scientific gadgets designed to be as light and as small as possible. These include: a microseismometer searching for Marsquakes; an advanced meteorological system analysing the Martian weather; a wide-angled panoramic camera which will be our eyes on Mars; a Raman spectrometer providing rock analyses; even a mole to retrieve samples from beneath the surface.The extended development time is essential for rigorous testing, as Waugh explains, 'When we put things in space we have to make sure that they'll survive the radiation environment, the extremes of heat and cold. Our science productivity is crucial, and malfunctions may affect that. The more science we get back the better justification there is for spending more money on planetary exploration.
我来回答
类似推荐
猜你喜欢
- 1把0到9十个数填在下面的方块里每个数只能用一次 囗+囗=囗+囗=囗+囗=囗+囗=囗+囗
- 2在0.1mol/L的Na2A溶液中,下列粒子浓度关系正确的是
- 3已知2的a次方乘以27的b次方乘以37的c次方=1998,其中a,b,c为自然数,求(a-b-c)的2003次方的值.
- 4单相桥式整流电路加电容滤波后负载电阻断路,则输出电压是多少?
- 5有木有八年级英语阅读理解与完型填空加油站答案纳?
- 6下列语句中正确的个数是( ) ①矩形的四边中点在同一个圆上;②菱形的四边中点在同一个圆上; ③等腰梯形的四边中点在同一个圆上;④平行四边形的四边中点在同一个圆上. A.1 B.2 C.3 D.4
- 7函数f[lg(x+1)]的定义域是[0,9],则函数f(x2)的定义域为( ) A.[0,1] B.[-3,3] C.[0,3] D.[-1,1]
- 81.有6个数,2、3、4、6、9、12不重复使用,要使下列等式成立 1组:( )/( )=( )/( )=( )/( ).2组:( )/( )=( )/( )=( )/(
- 9根据句意和首字母提示完成句子
- 10有一个分数,它的分子是最小的质数,分母是两位数中最大的合数,这个分数是( ),该分数的分数单位是( ).