Image: All the Water on Earth as a Blue Sphere
Posted on May 9, 2012
Jack Cook from the Woods Hole Oceanographic Institution created this image of a small blue sphere sitting on Earth. You can see a larger version of the image here. The blue sphere represents all of Earth's water (liquid, ice, freshwater, saline).
The USGS says all the water on Earth (including the water in the air and inside your cat) was put into a sphere it would be about 860 miles (about 1,385 kilometers) in diameter. The diameter would be about the distance from Salt Lake City, Utah to Topeka, Kansas, USA. The water bubble resembles a tiny ball in the image, but the flat, 2-dimensional screen does not really do it justice. It is larger than it appears to be.
Image: Illustration by Jack Cook, Woods Hole Oceanographic Institution, USGS