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1929 in science : ウィキペディア英語版
1929 in science

The year 1929 in science and technology involved some significant events, listed below.
==Astronomy and space exploration==

* July 17 – Robert H. Goddard tests the first rocket to carry scientific instruments (a barometer and a camera).
* Clyde Tombaugh discovers several asteroids: 2839 Annette, 3583 Burdett, 3824 Brendalee, 1929 VS, 1929 VD1.
* Edwin Hubble publishes his discovery that the speed at which galaxies recede positively correlates with their distance, which becomes known as Hubble's law, the basis for understanding that the universe is expanding.
* George Gamow proposes hydrogen fusion as the energy source for stars.
* Konstantin Tsiolkovsky proposes the construction of staged rockets in his book ''Космические поезда (Cosmic Trains)''.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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