Jupiter and Evolution of Complex Life on Earth.

Comets and asteroids collision with Earth and other planets is part of the continued planetary formation, the other part is the solar wind delivers water and gasses back to the Kuiper Belt from the planets, together they form the solar hydrologic cycle. The new theory of solar hydrologic cycle provides that solar wind stripping water and gasses from the inner planets, while having diminished effect on outer planets, is the cause for outer planets becoming gas giants. Jupiter, having the smallest orbit among outer planets, is destined to be the predominant planet and plays a critical role in complex life evolution on Earth. Jupiter grows mass by locking up comet mass, thus reducing the number of comet collisions to Earth. Reduced hydrogen infusion from comets enabled Earth's atmosphere transitioning from hydrogen to oxygen rich. The transition trajectories of Jupiter mass gain and Earth water and gasses mass fluctuation are calibrated using known geological events. Earth's trajectory can be divided into three periods, Hydrogen, Carbon Dioxide, and Oxygen, named after predominant gas in Earth's atmosphere for the period. Complex life only flourishes in the Oxygen Period, when aerobic metabolism is possible. Mass extinction can be caused by cometary hydrogen infusion that incinerates atmospheric oxygen. Probability of such astronomical hazards is declining as outer planets have locked up most comets and will continue to absorb more comets. Earth is safer than ever, and will become even safer, as dictated by the solar water cycle. The physics of the solar hydrologic cycle is universally true, life should be universal phenomena. [ABSTRACT FROM AUTHOR]