Arvin Ash

How did water get on earth? Where does water come from? (2019x29)

Udgivelsesdato: Jun 06, 2019

Water on earth is found in all three forms. But how did water get on earth? Where did the water on earth come from? The earth has an estimated 325 million trillion gallons of it. But earth began as a barren, lifeless, waterless ball of fire in its early history. There could not have been much water at the start. So what was the source of water? A single molecule of water is made up of 3 atoms, 2 atoms of hydrogen, and one atom of Oxygen, much rarer than hydrogen but still abundant. The journey of the first molecule of water starts almost 13.8 billion years ago, at the time of the big bang. There were no atoms formed yet, only protons and neutrons. It took about 400,000 years for the universe to cool down enough for electrons to be captured in orbits around protons. And this is what formed the first atom, simply one electron one proton. This was hydrogen. Oxygen is a much heavier and more complicated atom than hydrogen. It has 8 electrons orbiting a nucleus consisting of 8 protons and 8 neutrons. It took about another billion years or so before the first oxygen atoms were formed because it required nuclear fusion. This can only occur in nature, in the heart or center of stars. The earliest stars were massive. But this also made them short lived. And about 600 million years after the big bang is when some of the first stars began to go supernova, but just before these massive supernova explosions, in their core, lighter atoms fused to form heavier atoms like oxygen, carbon, and others. When these stars blew up in huge supernova explosions, the oxygen and other heavier elements began to disperse into space and spread out. Hydrogen and Oxygen with the help of some energy, fused together to form Water. After formation of this water, it turned to ice in the coldness of space and mixed with other dust particles that were simply floating in space for eons of time. And when enough dust from multiple supernova explosions collected over time in