Blue Oxygen

The oxygen we breathe every day is a colorless and odorless gas that is invisible to the eye. However, when oxygen is cooled below -183 degrees Celsius and turned into a liquid, it takes on a vivid sky-blue hue. Even more surprising is the fact that liquid oxygen is attracted to magnets. This is because the unpaired electrons within oxygen molecules form a unique structure, giving them magnetic properties. If you flow liquid oxygen between powerful magnets, you can witness the fascinating phenomenon of it hovering in the air and sticking firmly to the magnets. It turns out that this gas, which seems ordinary because it's always around us, was actually a surprising chemical substance possessing a blue color and magnetism.