很多种子在太空“修炼”过后,经过太空辐射,出现了脱胎换骨的效果。在地球上,植物的根原本都是向下生长的,但在太空中,它们掉了个180度的头,向各个方向伸展,可谓茁壮成长。太空飞船上,向日葵转脑袋的速度变得相当快,因为太空飞船每一个半小时就能绕地球一圈,一天有十六次日出。太空植物的叶子变得更厚、更短,颜色更绿,因为这样的光合作用效果更好,植 Many seeds in space “practice” after, after space radiation, there has been a reborn effect. On the planet, the roots of plants are originally grown downward, but in space, they lose 180 degrees and stretch in all directions. On a spacecraft, sunflowers turn their heads quite fast, because the spacecraft can circle the Earth every hour and a half and sunrise sixteen times a day. The leaves of space plants become thicker, shorter, and greener in color because photosynthesis works better