On决心要实现这个梦想4 October 1957, the Sputnik I satellite" was无数次实验之后,他们终launched" by the USSR and successfully orbited于成功研制出能够摆脱around Earth. Afterwards, the USSR focused地心引力的火箭。 1957on" sending people into space, and on 12 April10月4日,“旅伴一“人造卫星在...
&vi.沿轨道运行;环Sputnik 1 satellite⑥ was launched⑦ by th e USSR and successfully orbited ⑧around绕… …运行Earth. Afterwards, th e USSR focused on⑨ sending peopl e into space, and[2]on n.(环绕地球、太阳12 April 1961, Yuri Gagarin becam e th e first person in th e world to...
With a tremendous roar from its rocket engine, the satellite is sent up into the sky. Minutes later, at an altitude of 300 miles, this tiny electronic moon begins to orbit about the earth. Its radio begins to transmit an astonishing amount of information about the satellite's orbital path,...
GPS was an advancement of the 20th century made possible by space-age technology. GPS technology has been used globally throughout history. The launch of Russia’s Sputnik I satellite in 1957 ushered in the possibility of geolocation capabilities and soon after, the U.S. Department of Defense ...
Most galaxies are moving away from us, but the famous Andromeda galaxy is moving towards us. No need to panic. It will not happen for billions of years; by then, the entire human race will be dead or on another planet. It was thought that all the stars in the Universe were in the...
经过多次试验,他们成功Sputnik 1 satellite was launched by the USSR and successfully orbited around地制造出了能脱离地球引力的火箭。1957Earth. Afterwards, the USSR focused on sending people into space,and on 12年10月4日,苏联发射了“旅伴一号”卫April 1961, Yuri Gagarin became the first person in ...
根据第三段第一句“LedbySpaceSail, a companyinShanghai, theQianfanprojectaimstocreateChina'sfirstmassivesatelliteinternetconstellation, a networkofnumeroussmallsatellitesinlowEarthorbit, workingtogethertoprovideglobalinternetcoverage.(由上海SpaceSail公司领导,“千帆”项目旨在创建中国第一个大规模卫星互联网星座,在...
MALE PROFESSOR: No. I was thinking more along the lines of an elevator...FEMALE STUDENT: Wait, you're serious?MALE PROFESSOR: Sure. An elevator.That's a new idea to most of us, but in fact it's been around for over a century.If we could power such an elevator with solar energy,...
copper plate) could take several minutes to complete, resulting in blurred images as sitters shifted position or adjusted their limbs. The thought of holding a fixed grinas the camera performed its magical duties was too much to contemplate, and so an on-committal blank stare became the norm....
Explorer 1 was the first U.S. satellite and the first satellite to carry scientific instruments. (Image credit: NASA/Jet Propulsion Laboratory) Other countries began to send their own satellites into space as the benefits rippled through society. Weather satellites improved forecasts, even for remot...