本文对今天太阳系角动量的特殊分布提出一种说明：太阳在进入主序以前，在引力收缩阶段内曾经大量抛射物质，通过沙兹曼机制而损失了绝大部分角动量；
An interpretation of the present peculiar distribution of angular momentum in the solar system is given : before entering the main sequence , the sun while undergoing gravitational contraction lost most of its angular momentum ;
引力收缩