UNIQUENESS AND WORTHINESS OF LIFE ON EARTH

What do you think about the life on this earth where we live in? Specifically to the human beings who are able to think and have logic as well as having moral values. For many people this life is meaningless but for others this life wonderful that should be celebrated. Many of us ask about the uniqueness of life on this earth. Is life itself only on this earth. Is there a life among million of planets out there? But until now, scientists have never announce officially that they found a life in other planets. Is it possible to seek and find another lives out there, or could it be never come to a reality. Could it be that life on this earth is going to remain a mystery? Where do we comes from and where shall we go? These questions are still in mind of many people.

Even though we can’t many the answer of those questions, when comparing our planet with others, we should be thankful we have lived on earth. We understand how comfortable to live here and how beautiful it is. How precious life on this earth really. The life we own cannot be replaced or bought by anything. Everyone has his or her have our own life. Perhaps this is why when our beloved parent, friend died, it become the hardest stress experienced by humans. When one get a dangerous diseases like cancer, they will do everything to heal the men from their suffering that they may have longer life. I believe, as I have done, we would give or sold everything to pay our beloved life.

Many scientists have tried to make life. I’ve read some scientists who make experiments with chicken egg. They made chicken eggs in exact form and composition. It is expected to hatch after incubating. But this experiment failed. We return to the peculiarities and uniqueness of life on earth. The earth is a planet in the solar system, it look like blue when seeing from outer space. Its distance about 150 milion km from the sun and known as astronomical unit. This distance is a great suitable to support life on earth. We can imagine if earth as close as Mercury, we will be burned or if the earth as far as Jupiter from the sun we would be frozen. Someone said that even If the distance of the earth from the sun further or closer a little bit, it would affect the stability of water cycle.

Secondly, our planet revolve on its axis, we call it earth rotation. It causes this planet to have day and night. Yes day or night has very significance in our life. At night we rest and sleep where our body regenerate its cells. We cannot imagine this world without night, can we stay alive? It is said that one who does not sleep continuously for 7 days she or he could be die. Furthermore, do you ever think day and night longer or shorter? for example, what would happen if daylight 30 hours and night 30 hours also? Do you know that the temperature differences between day and night would be too large. Meanwhile if the Earth’s rotation is faster, the wind blowing would be too high in the atmosphere. Wow truly amazing! Verily, life on earth is very worthy.

Besides rotating on its axis, the earth also revolves around the sun once a year. As the consequences of this revolution on earth : 1) A change in the length of day and night time, 2) The change of constellation 3) The apparent annual motion of the sun 4) The change of season . Yes of course all of these also supports all life on earth.

Thirdly, the layer of Earth’s atmosphere is also very unique and is well suited to be alive. Earth’s atmosphere consists of nitrogen (78.17%) and oxygen (20.97%), with a bit of argon (0.9%), carbon dioxide and other gases ( approximately 0.0357%). About 75% of the atmosphere is in 11 km from the planet’s surface. The atmosphere does not have a proper boundary directly borders with the outer space but rather thins gradually. In fact the atmosphere protects life on Earth by absorbing ultraviolet radiation from the sun and reducing temperature extremes between day and night. The atmosphere protects life on Earth form other outer space objects like meteors also.

These are the compositions and benefits of the gas in the atmosphere:

1. Nitrogen (N2) number at most, covering 78 % of atmosfer. Nitrogen is not directly joined with other elements, but it is part of an organic compound.

2. Oxygen (O2) is essential for life, which is to transform nutrients into energy to live.

3. Carbon dioxide (CO2) causes the greenhouse effect (greenhouse) transparent to short-wave radiation and absorb long-wave radiation. Thus the increase in the concentration of CO2 in the atmosphere will lead to a rise in the earth’s temperature.

4. Ozone (O3) is a gas that is very active and is another form of oxygen. The gas contained in a height between 20 to 30 km. Ozone absorbs ultraviolet radiation that has great energy and is harmful to the human body.

Fourthly is water. Water is like life itself. How can a human live without water. Water is very essential for all compounds of life on Earth. Water covers nearly 71% of the Earth’s surface. There are 1.4 billion cubic kilometer is available on Earth. Most of the water is in the ocean (salt water),in the layers of ice (in polar and mountain tops), in rivers, lakes, and sea ice. In addition water can be present as cloud and rain as well as water vapor. Water has also has a cycle: through evaporation, rain, and water flows over the land surface to the sea.

How all of this very organized and magically given the importance of clean water is important for human life. For many people it could be a coincidence, and it is sometimes seem very common in our daily life. That’s why many people see it a trivial matter. However, this actually gives a sense miraculous thing. Life on earth is very worthy and unique. Life exist only on our planet as long as we know until now. This means we should celebrate this life. We thank to the designer of this wonderful life. We should keep our planet well and and give to the next generation.