If we just take a moment to consider the precision required to sustain life, we’d understand how precarious it is. For example, our Earth is in a perfect position in our solar system that had it been any farther, the water would’ve frozen; any closer, the water would vaporize. So you see it is all about precision, and even the slightest change can make life on Earth precarious. In fact, these changes are not only limited to the position of Earth but also includes a number of other parameters. Let’s see how we are living a life that is queerly precarious.
1. Ice Age
Oddly enough, it is believed that Ice Age played an important part. If it didn’t happen at all, then the valleys wouldn’t be fertile enough to harbor advanced life. On the other hand, if it had been more frequent, then the Earth might still suffer from freezing temperatures unsuitable to sustain life.
2. Magnetic Field Of Earth
Scientists claim that if Earth didn’t have a strong and stable Magnetic field, we’d all be fried by the solar storms and cosmic rays. Also, the poles of Earth flip every 300,000 years and scientists say that we are overdue for another flip. Seems like our descendants will have to buy new compasses.
3. Jupiter: The Savior
Jupiter helps our world in the most crucial way. This big planet saves the Earth from asteroids and other space debris, drawing all this to itself. Also, Jupiter like planets are rare in the universe.
4. Our Solar System
Another great factor that helps Earth to harbor life is the location of our solar system. It is situated at a very far distance from the center of the galaxy, where black holes and supernovas are formed that kill off life. Our solar system is between the spiral arms, giving us a great view to study and explore the universe.
5. Carbon And Oxygen
Carbon and oxygen are two most important elements to sustain life. But these elements were not made in the big bang explosion. Scientists believe that they were formed much later in the stars, which consumed elements like helium, hydrogen, and lithium, and produced heavier elements (carbon and oxygen). Without these, life wouldn’t have been possible on Earth.
6. Gravitational Pull Of Moon
Moon has a lot of effects on the way things happen here on Earth. The crucial one is its gravitational pull on our planet. Scientists believe that Earth had a rotation period of eight hours, which could’ve resulted in the surface wind velocities going up to five hundred miles per hour. Thanks to the gravitational tug of moon which over the years has increased the rotation period of Earth to twenty-four hours.
7. Iron Quantity In Oceans And Soils
The quantity of iron in oceans and soil is perfectly balanced god knows how. If it were more than it is, iron poisoning would’ve killed life forms. If it was less, there wouldn’t be enough mineralization to harbor advanced life.
8. Our Galaxy’s Size
Science suggests that our galaxy is in the top one percent of the massive and most luminous galaxies. If too large, then the infusion of gas would disturb the sun’s orbit igniting deadly galactic eruptions. If too small, then the infusion of gas would be insufficient to sustain star formation.