The Earth is one of the most important natural resources on our planet. It is home to all of the species that exist, as well as many types of plants and animals. Earth has the potential to provide material for life and is the foundation for everything that lives on earth. If we destroy the earth, no life will be able to survive and it is estimated that the human population will soon face total annihilation.
Earth is very much a part of our lives. It orbits the sun and is one of the four planets that make up the solar system. When the Earth was created, nothing else existed beyond the solar system and all other planets were created and populated by comets and other space debris. The only natural planet that was formed besides the earth was the moon which received nearly one billion tons of rocks from comets. Therefore, Earth was pretty well set up to be a target for many massive space collisions that would result in the bombardment of the planet by comets and meteorites.
The largest impact that the solar system has had on the earth was a collision between two relatively small planets in the outer solar system. These collisions resulted in the creation of the moon and the outer planets that we know of today. Therefore, the earth was not built with any significant barriers to protect it from meteorites or comets.
As you can see, even today Earth is pretty vulnerable to collisions. However, it was not designed like a safe shield. We live in a material universe where everything is constantly crashing into each other. Therefore, it is highly unlikely that earth will be hit by anything larger than a small space rock. The only large celestial objects that could strike the earth are meteorites or comets. The collisions that we have been primarily worried about are comets and large meteorite collisions.
If you take into consideration the composition of the earth, you can see that it was not hit directly by any celestial objects that would impact it. However, comets and meteorites do impact the earth indirectly. They pass through our atmosphere and enter our system at different times. This means that their energy output is much greater than the energy output of the earth, which results in the dimming of our planet’s night skies.
The question remains as to why earth is vulnerable to meteorites and comets? It is highly doubtful that the composition of the earth prevents them from striking the planet. It is more likely that there is some sort of boundary protecting our planet from direct impact. When a space rock does strike, however, it can result in substantial damage to the planet’s surface. That would allow the building of an atmosphere around the space rock, which is essential for protecting the planet from further impacts.