天文学科普知识详说

按一下以編輯母片標題樣式,按一下以編輯母片,第二層,第三層,第四層,第五層,*,Credit:NASA/KSC,Aerospace,航天,Credit:NASA,Credit:NASA,Voyager,航行者探測船,Interplanetary Spaceflight,Credit:NASA,Credit:NASA Goddard Space Flight Center,12740 km,Credit:NOAO,中間層,對流層,平流層,熱氣層,外氣層,Credit:NASA,Credit:KSC,NASA,Launch of Atlantis,Anti-gravity,反,地心吸力,Credit:NASA,Escape Velocity,逃逸速度,11.2 km/s,10 km,Credit:CBERS-1,Propulsion,噴射式推進,Credit:,Credit:NASA,Credit:NASA,Multistage Rocket,多級火箭,Credit:NASA,Space Shuttle,太空穿梭機,Credit:NASA/JPL,Cassini Spacecraft,卡西尼號探測船,Credit:NASA,KSC,Titan IV-B Rocket,Launch Window opened on Oct 6,1997,Second Attempt on Oct 13,1997 04:55-07:15 EDT,Centaur Upper Stage,Diameter,4.3 m,Height,8.8 m,Thrust,147 000 N,Total Launch Mass,941 658 kg,Total Height,56 m,Thrust-Solid Rocket Motors,15.2 million N,Thrust-First Stage,2.4 million N,Thrust-Second Stage,467 000 N,Credit:NASA,KSC,LAUNCHED!,Oct 15,1997 04:43 EDT(16:43 HKT),Credit:NASA/JPL,7,年金金地木引力推進軌道,7 Years VVEJGA Trajectory,日期,行星,飛掠距離,1998-04-26,金星,284 km,1999-06-24,金星,603 km,1999-08-18,地球,1173 km,2000-12-30,木星,9 720 000 km,引力推進節省了,68000kg,的燃料,Credit:Gary,Hovland,引力推助,Gravity Assist,Credit:NASA/MSFC,Solar Sail,太陽帆,Interstellar Spaceflight,Credit:NASA/MSFC,