[central_va]

Explanation: How much of planet Earth is made of water? Very little, actually. Although oceans of water cover about 70 percent of Earth's surface, these oceans are shallow compared to the Earth's radius. The above illustration shows what would happen if all of the water on or near the surface of the Earth were bunched up into a ball. The radius of this ball would be only about 700 kilometers, less than half the radius of the Earth's Moon, but slightly larger than Saturn's moon Rhea which, like many moons in our outer Solar System, is mostly water ice. How even this much water came to be on the Earth and whether any significant amount is trapped far beneath Earth's surface remain topics of research.

[WakeUpAndVote]

Globull warming, no doubt.

[Berlin_Freeper]

The brain is composed of 70% water.

[central_va]

Bump

[Chaguito]

Great! Something else to worry about. (Great post!)

[traderrob6]

A deceiving graphic. If the continents were all bunched up it would like like a large BB next to the “Blue ball” of water.

[Theoria]

Yeah, I’d like to see a similar image of oil. I wonder how much oil we have consumed since we started using it.

[sand88]

Pretty cool. I just did a rough calculation and came up with a ball 636 miles in diameter. I assumed a radius of 3959mi with a 2 mile water depth covering 70%. Still, it’s a lot of water!

[Steve Van Doorn]

Their calculations are wrong. The volume of water on the plant which includes the water in the earth and in the atmosphere comes out to 1,400,000,000 km^3 which would make a sphere approximately 1400 km in diameter which is twice as large as they show in the pic.

Just most crap out of NASA. They need to go away