GK
SOLAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It was always there
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It came from water-containing meteorites smashing into the planet
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water floating in space rained down on the planet
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we don’t have water on our planet.
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Detailed explanation-1: -Newcombe and her co-authors discovered that, contrary to popular belief, not all outer solar system objects are rich in water. This led them to conclude that water was likely delivered to Earth via unmelted, or chondritic, meteorites. Newcombe said their findings have applications beyond geology.
Detailed explanation-2: -As space rocks bombarded Mars during its first 100 million years, they brought water-enough to form a planet-wide, 300-meter-deep ocean, researchers say. The team examined meteorites that had come to Earth from Mars in order to estimate how much water reached the early Red Planet.
Detailed explanation-3: -Multiple geochemical studies have concluded that asteroids are most likely the primary source of Earth’s water. Carbonaceous chondrites–which are a subclass of the oldest meteorites in the Solar System–have isotopic levels most similar to ocean water.
Detailed explanation-4: -When atoms of elements collide into each other in space, they can form compounds, such as water. To make water, one atom of hydrogen and one oxygen atom combine to form a hydroxyl ion. The hydroxyl ion can combine with a second hydrogen atom, forming a stable molecule that doesn’t react further.