Physics
Zero-G Experiments
Quick fact
A flame in microgravity forms a perfect sphere and burns much slower than on Earth, because without buoyancy, fresh oxygen only reaches the flame through slow diffusion.
Why this is interesting
Astronauts on the International Space Station often play with floating water blobs, but did you know that those playful bubbles are also revealing secrets that could lead to better drugs and stronger metals? Why does removing gravity change so much?