| 单词 | planetesimal |
| 释义 | planetesimal (once / 211060 pages) n WORD FAMILY planetesimal: planetesimals USAGE EXAMPLESAlessandro Morbidelli, one of the astronomers who proposed the planetesimals hypothesis, said nothing is proven yet, and both models rely on assumptions. New York Times(Nov 04, 2016) Over a few million years, the dust builds up into grains, pebbles, boulders, and, eventually, kilometer-wide planetesimals. Science Magazine(Jul 28, 2016) As they report this week in Nature, scientists found the system using the Transiting Planets and Planetesimals Small Telescope, or TRAPPIST. National Geographic(May 02, 2016) n one of many small solid celestial bodies thought to have existed at an early stage in the development of the solar system Hyper celestial body, heavenly body natural objects visible in the sky |
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