Why does the earth support life

We can add more general requirements for life in general: Not orbit a star that is too close to a cosmic explosion like a supernova Be far enough from massive planets that they do not continually divert asteroids to hit it or perturb its orbit strongly Probably not be so massive that it retains hydrogen and becomes a "gas giant" Perhaps it is also essential to have a massive planet well outside its orbit, like Jupiter, to divert potential devastating asteroids away, or to make them destroy themselves as in the asteroid belt. There are distinct trends among the planets that indicate still more requirements for life: We have already discussed how the distance from the sun and mass of a planet determine whether it can retain "light" gases or any gases in its atmosphere.

Why does the earth support life

Nonetheless, the long term stability of the solar system remains a perplexing, unsolved issue.

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Chaos in the Solar System Introduction The universe, our galaxy, our Solar System and the Earth-Moon double planet system demonstrate some remarkable evidence of intelligent design. Taken separately, each characteristic is highly improbable by random chance.

When taken together, the probability is so small as to be impossible—by random chance. The alternative explanation, design by an intelligent Creator is a more realistic explanation.

Either way, one must admit that we are a product of a miracle—either a miracle of chance or a miracle of design.

NASA discovered seven nearby planets that could support life

Let's look at a few of the improbable highlights for the design of the earth and our Solar System. This orbit lies far from the center of our galaxy and between the spiral arms.

The stability of our position is possible because the sun is one of the rare stars that lies within the "galactic co-rotation radius. Thus, most stars located between spiral arms do not remain there for long, but would eventually be swept inside a spiral arm.

Only at a certain precise distance from the galaxy's center, the "co-rotation radius," can a star remain in its place between two spiral arms, orbiting at precisely the same rate as the galaxy arms rotate around the core Mishurov, Y. Why is it important that we are not in one of the spiral arms?

First, our location gives us a view of the universe that is unobstructed by the debris and gases found in the spiral arms. This fact allows us to visualize what the Bible says, "The heavens declare the glory of God.

Second, being outside the spiral arms puts us in a location that is safer than anywhere else in the universe. We are removed from the more densely occupied areas, where stellar interactions can lead to disruption of planetary orbits.

In addition, we are farther from the deadly affects of supernovae explosions. Do extragalactic cosmic rays induce cycles in fossil diversity? Unique stabilization of the inner solar system A recent study reveals some unusual design in our solar system.

With the continuing growth in the capabilities and sophistication of computer systems, scientists are gaining the ability to model the dynamics of the Solar System and ask "what if" questions regarding the presence and size of planets.

The presence of Jupiter is required to allow advanced life to exist on the Earth see below. However, Jupiter's large mass along with the other gas giants has a profound destabilizing effect upon the inner planets. In the absence of the Earth-moon system, the orbital period of Jupiter sets up what is called resonance over the period of 8 million years.

This resonance causes the orbits of Venus and Mercury to become highly eccentric, so much so, that eventually the orbits become close enough so that there would be a "strong Mercury-Venus encounter. The authors of the study used the term "design" twice in the conclusion of their study: Our basic finding is nevertheless an indication of the need for some sort of rudimentary "design" in the solar system to ensure long-term stability.

One possible aspect of such "design" is that long-term stability may require that terrestrial orbits require a degree of irregularity to "stir" certain resonances enough so that such resonances cannot persist. The earth-moon system and the dynamical stability of the inner solar system. The Astronomical Journal In addition, it is readily apparent from the cycle of ice ages that the earth is at the edge of the life zone for our star.

Although the earth has one of the most stable orbits among all the planets discovered to date, its periodic oscillations, including changes in orbital eccentricity, axial tilt, and a ,year periodic elongation of Earth's orbit, results in a near freeze over Kerr, R.

Why does the earth support life

He goes on to say, "Given that climate stability may depend appreciably on e, it could be no coincidence that we inhabit a planet with an unusually circular orbit. How Special is Earth's Orbit?

Plants and Life on Earth

This does not even consider the other design parameters that are required for life to exist anywhere in the universe. Axial tilt and eccentricity of orbit The earth is titled on its axis at an angle of This is important, because it accounts for the seasons.

Two factors impact the progression of seasons. The most important is the location of land masses on the earth. Nearly all of the continental land mass is located in the Northern Hemisphere. Since land has a higher capacity to absorb the Sun's energy, the earth is much warmer when the Northern Hemisphere is pointing towards the Sun.

This happens to be the point at which the earth is farthest from the Sun the aphelion of its orbit. If the opposite were true, the seasons on the earth would be much more severe hotter summers and colder winters.At least on Earth, the oxygen in the atmosphere came from life, so we think finding it on another planet would just about close the case for life.

There are a lot of conditions for a habitable planet, but we do know of one for sure. It also does not have an atmosphere to form a barrier against radiation. Venus is a veritable purgatory. The average temperature is over degrees, the barometric pressure is that of meters underwater on Earth, and the cherry on top comes in the form of occasional bouts of acid rain.

Earth could continue to host life for at least another billion years, as long as nuclear holocaust, an errant asteroid or some other disaster doesn't intervene, a new study calculates.

Earth is unique in the Solar System as being the only planet which is able to support life in all its forms: from basic living micro-organisms to highly sophisticated and intelligent human beings. There are many reasons why this happens.

Energy from the Sun that makes its way to the Earth’s surface can have trouble finding its way back out to space. This is because of a natural process called the greenhouse kaja-net.comt the greenhouse effect, Earth’s temperature would be below freezing. A study by the World Wildlife Fund (WWF), to be released on Tuesday, warns that the human race is plundering the planet at a pace that outstrips its capacity to support life.

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