The Apollo program was the name of NASA's project to land humans on themoonin the 1960s and early 1970s. With the success of Apollo 11 in 1969, which put astronauts on the lunar surface for the first time in history, the U.S. was able to declare victory in the space race against ...
解析 B。本题考查时态。“The Apollo program was a series of space missions carried out by NASA in the 1960s and 1970s”这句话中“was”是 be 动词的过去式,所以是一般过去时。A 选项是一般现在时;C 选项是现在完成时;D 选项是过去进行时。
DirectAscenttraveldirectly→returnpowerfullaunchvehicle,theplannedNova.rocket.Multiplerockets(upto15insomeplans)+aDirectAscentspacecraftandpropulsionunitsfortranslunarinjection.SaturnVlunarexcursionmodule+.Acommandmodule月球旅行舱指令舱PropellantbecarriedbyanautomatedvehicleforthereturntoEarthbetransferredfromtheautomated...
by NASA manager Abe Silverstein, who later said that "I was naming the spacecraft like I'd name my baby."[1] While NASA went ahead with planning for Apollo, funding for the program was far from certain, particularly given Eisenhower's equivocal attitude to manned spaceflight.[2...
The Apollo program of the 1960s and early 1970s cast a long shadow over expectations for the exploration of outer space, a shadow that has yet to be overcome. This chapter focuses on five major responses to Apollo that gained credence in the United States in the 1970s: first, the memory...
space program a half century ago, except this time with the more distant target of Mars, and taking much longer than President Kennedy’s promise of “before this decade is out.” But while Project Apollo was arguably the greatest technical achievement in human history, it was, in terms of...
The CSM and LM space vehicles carried by the Saturn Vs were the “Chariots of Apollo” as NASA’s history of the program calls them. Between 1969-72 they carried 27 crewmen to the moon – and 12 of them all the way to the lunar surface and back. ...
Like during the 1960s for the Apollo Program, an inspiring and an audacious goal—a Unified Space Vision is needed for space exploration to establish a permanent human presence on Mars. The proposed architecture establishes pathways of progressive missions to cis-lunar space, asteroids, Phobos, and...
Space & Rocket Center in Alabama. This NASA schematic details the size of the Apollo space capsules, service modules and lunar landers that would ultimately take astronauts to the moon in the late 1960s and early 1970s. (Image credit: NASA) Apollo spacecraft Sitting atop the Saturn V rocket...
thirdhumanspaceflightprogramcarriedoutbyNASA.2.President JohnF.Kennedy'snationalgoalof"landingamanontheMoonandreturninghimsafelytheEarth"bytheendofthe1960s 3.The mostactiveandinfluentialscientificandtechnicalareasin20thcenturyandalsoanimportantsymbolofhumancivilizationhighlydeveloped PresidentKennedydelivershis...