This is an image of the Atlantic ocean which is huge. Now in your head imagine it being measured in teaspoons. That would be a very big number. Did you know that one teaspoon of water has more atoms than there are teaspoons in the Atlantic ocean? In one teaspoon there are 200,000,000,000,000,000,000,000 water molecules, and each of these is made of three atoms. If you lined all of these atoms end to end you would get 50 billion km which is 10 times the width of our solar system.