Earth: A little speck in the Cosmos which is our home

How can we describe the wonders of this world? The precision involved in placing the different planets, stars, galaxies at a specific distance, their compositions, the movement patterns of those celestial bodies and their speed of expansion, rotation, and revolutions!

We are living in a scientific era. The scientists could calculate the size, distance, speed, weight, the composition of many celestial bodies in the cosmos. We have many theories to understand various natural phenomena.

Let us take the example of the Earth, our home. What is the speed of its rotation on its own axis? Almost 1000 miles per hour! What about its speed on the orbit around the sun? 67,000 miles per hour! When our home planet itself is moving in such a tremendous speed, we could stand straight. Sit, sleep and relax and still feel stationary.

How on the earth, we are standing so comfortably, despite its rotation and revolution with the cosmic speed? We all know about the gravitation theory and the force that make us stay on earth. But who has decided the exact amount of the gravitational force needed so that we could evolve as human beings and live on the earth? If the earth had much higher gravity or lower gravity, would we have evolved in this manner or would have become something else? We have enough technology to calculate the speed and duration of the earth’s rotation and revolution. But, how has the earth decided on it and maintaining the same for billions of years? How the exact quantity of nebulous material was allotted to create the sun and to evolve as the solar system? It is amazing to read about the formation of the Sun and the solar system.

Let us explore the genesis of the earth as per the theory:

About 4.6 billion years ago, our solar system was a loose collection of gas and dust (Nebula). There was some trigger, that caused a pressure change in the center of the cloud. Origin of the trigger would have been a supernova exploding nearby, or a passing star changing the gravity. Whatever the reason, the cloud collapsed and created a disc of material.

The center of this disc saw a great increase in pressure that eventually was so powerful that hydrogen atoms loosely floating in the cloud began to come into contact. In due course of time, they fused and produced helium and initiated the formation of the Sun. The Sun was a hungry youngster that ate up 99% of what was swirling around. This still left 1% of the disc available for other things. Small bits of dust and gas began to clump together. And this is where planet formation began.

A Sun-like star usually takes approximately 1 million years to form, with the protoplanetary disc evolving into a planetary system over the next 10–100 million years.

In such a complex process, how would you express the wonder of the formation of Sun and subsequent formation of planets, satellites, comets and other objects in a precise manner? How shall we express the splendor of genesis of Earth and its evolution as the only planet to host living beings in the entire solar system? Isn’t it a wonder that Earth has got the exact composition of terrestrial, gaseous and liquid substances that could host living beings in it?

Is it a sheer chance that earth has evolved in this manner to give birth to the innumerable species on it? Or was there any calculation behind the splendid composition of the earth, its speed, and duration of both rotation and revolution? How was it done? If all of these are natural phenomena, then even the evolution of species on earth and eventual entry of human beings on it!

In this big world, Earth itself is a speck of cosmos and we born as humans, after this complicated process of evolution of life on earth. Isn’t it fortunate to be born as humans in this era?

As we learn more, we are left with more things to learn about the world. There is no limit to the wonders of this world that could keep us guessing and working to understand them all.

Would Earth have been a better place without having humans on it? Maybe all other species of living beings would have had a better life without human interference in their life. But you never know, some other species would have become powerful and started harming the earth in different ways…

Earth day was here on 22nd April with this year’s theme; Protect our Species to save most threatened and endangered species on earth.

However, knowing that we have the greatest privilege to live on Earth as a most evolved species, shall we show a bit gratitude and respect to our great planet? Could we work towards conserving our environment? Though we are too small in this universe, our tiny efforts could have a small positive impact on our environment and help in saving natural resources and endangered species on Earth.

Ask yourself on the ways to reduce pollution and incorporate habits and practices that could conserve the environment on Earth. Here is a list from which you could take up an action or make your own pledge to conserve the Earth.

  • Reduce, Reuse, Recycle — Three great ways to eliminate waste and protect our environment.
  • Quit plastic bags
  • Plant a garden/Plant a tree
  • Save water
  • Reduce your food waste
  • Eat less meat
  • Buy local produce
  • Donate unused clothes and household items
  • Switch to natural cleaning supplies to clean your home
  • Open the window and reduce the use of air conditioners
  • Walk, use bicycles and public transport as much as possible

—Anitha KC

Images: NASA and Data: Web sources

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