| 11. | North Korea alarmed the region in 1998 by firing a multistage rocket over Japan and into the Pacific.
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| 12. | As disposable multistage rockets launching tiny capsules provided the first generation of spacecraft, the shuttles are the second generation.
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| 13. | This design emulates an air-launched multistage rocket with two recoverable stages : the tow plane and the glider itself.
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| 14. | After completing its primary burn, the first stage of the multistage rocket detached from the second stage as usual.
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| 15. | In 1929, Tsiolkovsky proposed the construction of multistage rockets in his book " Space Rocket Trains " ( ).
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| 16. | The multistage rocket launches from Peterson Field, near Colorado Springs, Colorado, lands on the Moon, and returns to Earth.
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| 17. | North Korea shocked its neighbors last August when it sent a multistage rocket over Japan and into the Pacific Ocean.
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| 18. | To ensure clean separation and prevent contact, multistage rockets may have small retrorockets on lower stages, which ignite upon stage separation.
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| 19. | North Korea alarmed Northeast Asia a year ago by sending a multistage rocket sailing over northern Japan and into the Pacific Ocean.
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| 20. | After North Korea fired a multistage rocket on Monday, defense and intelligence officials said they had closely monitored preparations for the launch.
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