Warning: file_put_contents(): Only 0 of 7817 bytes written, possibly out of free disk space in /www/wwwroot/ndsq.cn/index.php on line 55 planetesimal hypothesis是什么意思,planetesimal hypothesis的翻译,planetesimal hypothesis音标、读音、用法和例句_开心英文字典_柠咚词
the discredited theory that the close passage of a star to the sun caused many small bodies (planetesimals) to be drawn from the sun, eventually coalescing to form the planets