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11. Our solar system
| 11.2 |
Our solar system, our life support system
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| Before we venture too far into the interesting features and relationships of our Solar System, there is one relationship that deserves special up front mention. It is a feature of the rest of the solar system in relation to the Earth that is almost never mentioned, let alone realised- that the whole solar system is geared to the survival of life on Earth. | ||
| Further into this chapter, we will show that there is only one feature within the Solar System that has any regular significant detrimental effect to the sustainment of human life on this planet (the tail of Venus at certain positions at certain times in certain years). All other massive hits on the Earth (such as the death of the dinosaurs) are principally caused from fortis's outside the solar system (such as the debris and gravity wake of another solar system). | ||
| We will also explain further into this book that asteroids have to be of a significant size to risk total extinction of all life on Earth (around 300 km + wide to kill all life on Earth for good, including cockroaches). But what is of particular interest is just how hard it would be for an object of around 300km wide to get through the massive and elaborate defence network to hit the Earth. | ||
| Firstly, the asteroid would have to get through the Oort cloud, the outer array of dust and small meteorites (50 to 100 metres wide and below) like a giant chain mesh, slowing down and often breaking up large objects (300km across) into smaller pieces, thus reducing the life threatening impact of a killer asteroid. | ||
| Next the massive equatorial gravity and magnetic fields would draw the asteroid into the equatorial plane, skewing it towards the first of four massively attractive Jovian (mostly hydrogen) planets. There the incoming 120km wide fragment plus splinters would most likely skew into an orbit of Uranus, Neptune, Saturn or finally, but not least Jupiter. If the angle was too sharp, then the largest piece might come smashing into the tail of one of many of the huge Jovian planets. | ||
| Now probably fragments of 15km to 40km in size, some skewed off from hitting the Earth, the fragments have to face the challenge of the Inner Asteroid Belt between Jupiter and Mars. | ||
| Almost home, now missing Mars and its tail, it has to choose between Venus or Earth, both with similar attraction rates and magnetic/gravity fields. | ||
| Upon the bearing of Earth, the fragments, now only fractions of what they were upon meeting the first line of defence, must get past the Moon and then through Earth's final defence system- its atmosphere. | ||
| We therefore highlight this important and special personal relationship each of us has with the Solar System. That before we begin to look at the details of our Solar System, that we understand its ever watchful protection of Earth against the only non-higher order life objects that externally can extinct all of life on Earth. | ||
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