The water naturally collects into a shape that has the least surface area: a sphere. — 'Stunning was the word': Astronauts snap amazing aurora photo from ISS during severe geomagnetic storm ...

Related: 'Spaceborne': Astronaut Don Pettit's amazing space photos (gallery) The floating environment means all physical forces are treated the same, since there is no "gravity to tug downward," the ...

An astronaut just created a colorful little world ... the United States Geological Survey wrote of why water becomes a sphere ...