SOLAR SYSTEM

Detailed explanation-1: -At this time, about 3.8 billion years ago, the water condensed into rain which filled the basins that we now know as our world ocean. Most scientists agree that the atmosphere and the ocean accumulated gradually over millions and millions of years with the continual ‘degassing’ of the Earth’s interior.

Detailed explanation-2: -According to the most recent scientific studies, an ancient ocean likely covered the entire planet 150 million years after the formation of Earth, about 4.4 billion years ago. Scientists know this through the discovery of ancient zircon crystals that were dated around this time.

Detailed explanation-3: -Though these hypotheses have changed over time, one idea now has the wide support of Earth scientists, called the volcanic outgassing theory. This means that water vapor given off by volcanoes erupting over millions or billions of years, cooled and condensed to form Earth’s oceans.

Detailed explanation-4: -Reality: There is the same amount of water on Earth today as three billion years ago.

Detailed explanation-5: -Astronomers have long contended that icy comets and asteroids delivered the water for them during an epoch of heavy bombardment that ended about 3.9 billion years ago. But a new study suggests that Earth supplied its own water, leaching it from the rocks that formed the planet.