Jan Hendrik Oort
/ɔːt
/ (1900–92), Dutch astronomer. He proved that the Galaxy is rotating, and determined the position and orbital period of the sun within it.
| 单词 | Oort, Jan Hendrik |
| 释义 | Jan Hendrik Oort/ɔːt/ (1900–92), Dutch astronomer. He proved that the Galaxy is rotating, and determined the position and orbital period of the sun within it. |
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