Our Earth like music displays unity, order and rhythm. It's perfect balance is a melody. We can appreciate our earth and the cosmos at "Astronomy Picture of the Day".
Here are some extremely important factors for life as we know it.
Balance: The earth is a living planet where many complex systems run perfectly without stopping at all. When compared to other planets, it is evident that in all its aspects the earth is specially designed for human life. Built on delicate balances, life prevails in every spot of this planet, from the atmosphere to the depths of the earth.
Seasons: The Earth is tilted on its axis at 23.5 degrees, which creates the seasons. When one hemisphere is tilted toward the Sun, it experiences summer. The hemisphere tilted away experiences winter. Spring and fall occur when a hemisphere is between these two extremes.
Water: Earth is the only planet where the normal temperature range allows water to exist on its surface as a liquid. In fact, oceans cover 70 percent of Earth's surface.
Atmosphere: Earth's atmosphere is another factor that makes life possible. Consisting of 78 percent nitrogen, 21 percent oxygen, and traces of other gases, it provides protection from most of the Sun's harmful radiation. It also protects us from most of the meteors that head for the planet; they burn up in the atmosphere before they can hit the ground. The atmosphere of the earth holds the most appropriate gasses in the most appropriate ratio needed for the survival not only of human beings, but also of all life on the earth.
Oxygen: If the oxygen percentage in the atmosphere were greater than 21%, the cells in our body would soon start to suffer great damage. The vegetation and hydrocarbon molecules needed for life would be destroyed. If this percentage were less it would be difficult to breathe and the food we eat would not be converted into energy. Therefore, the 21% of oxygen in the atmosphere is the most ideal quantity determined for life.
Size: The earth has the ideal size in terms of magnitude to possess an atmosphere. If the mass of the earth were a little less, then its gravitational force would be insufficient and the atmosphere would be dispersed in space. If its mass were a little greater, then the gravitational force would be too much and the earth would absorb all gasses in the atmosphere. There is an incredibly high number of conditions required for the formation of an atmosphere such as the one our world currently has and all of these conditions must exist to support life.
The absence of a single balance would end LIFE here on earth.
| Parameter | % |
|---|---|
| Galaxy size | 0.1 |
| Galaxy location | 0.1 |
| Distance of the sun from center of galaxy | 0.2 |
| Age of the sun | 0.4 |
| Distance form the sun | 0.001 |
| Gravity of earth | 0.001 |
| Inclination of orbit | 0.5 |
| Oxygen quantity in atmosphere | 0.01 |
| Gravitational interaction with a moon | 0.1 |
| Longivity requirements | 0.00001 |
The total probability of life on planet Earth is infinitesimal. And by chance there shouldn't be any planets capable of supporting life in the universe. These statistics and 57 others may be found at "The Incredible Design of the Earth and Our Solar System" by Rich Deem. What beautiful music!
