星云中继假说:星云中的原始生命和地球生命的起源

Nebula-Relay Hypothesis:Primitive Life in Nebula and Origin of Life on Earth

提出了关于地球生命起源的新模型—星云中继假说,它是宇宙胚种论的修改版本.在这个模型中,作为宇宙"种子"的原始生命起源于太阳系的前身恒星系统中的生物化学过程,并且在前身恒星死亡后充满整个原太阳星云.地球生命的起源可以分为3个阶段:太阳前身恒星的原始生命起源,原太阳星云时期和太阳系形成与地球生命时期.这个模型最主要的推论是原始生命(或其后裔)以及它们的化石存在于太阳系内各种天体之中.

A modified version of panspermia theory,named Nebula-Relay hypothesis or local panspermia,is introduced to explain the origin of life on Earth.Primitive life,acting as the seeds of life on Earth,originated at pre-solar epoch through physicochemical processes and then filled in the presolar nebula after the death of pre-solar star.Then the history of life on the Earth can be divided into three epochs:the formation of primitive life in the pre-solar epoch;pre-solar nebula epoch;the formation of solar system and the Earth age of life.The main prediction of our model is that primitive life existed in the pre-solar nebula(even in the current nebulas)and the celestial body formed therein(i.e.solar system).