Zero-gravity Memes

Flames in space are basically having an identity crisis! Without gravity pulling hot gases upward, combustion creates a perfect blue sphere instead of that familiar teardrop shape. It's like the flame said "round is my personality now!" The blue color comes from complete combustion since oxygen diffuses evenly around the fuel. Space firefighters would need spherical water buckets! Next experiment: marshmallow roasting in orbit - would give a whole new meaning to "evenly toasted"!