# Amazing Flame Comes to Life in Space Station Microgravity Combustion Science

From ignition to pulsating-jellyfish then warp-drive ending! Understanding combustion may lead to more efficient engines and spectacular videos.

Science Objectives The Flame Extinguishment - 2 (FLEX-2) experiment is the second experiment to fly on the ISS which uses small droplets of fuel to study the special spherical characteristics of burning fuel droplets in space. The FLEX-2 experiment studies how quickly fuel burns, the conditions required for soot to form, and how mixtures of fuels evaporate before burning. Understanding these processes could lead to the production of a safer spacecraft as well as increased fuel efficiency for engines using liquid fuel on Earth.

Earth Applications Watching fuel burn in a perfect sphere provides a unique view of fire that would be impossible to recreate on Earth. Better knowledge of fire’s dynamics could lead to improved fuels for vehicles and aircraft, including efficient, environmentally friendly mixtures of chemicals that burn well together and produce less soot. Soot results from the incomplete burning of a hydrocarbon, and it is harmful to human and environmental health. The FLEX-2 experiment provides a unique view on soot formation that would be impossible under the influence of Earth’s gravity.

Space Applications The FLEX-2 experiment measures soot buildup, flame heat and the burning rates of various types of fuels and fuel mixtures. Understanding how fuels burn in microgravity could improve the efficiency of fuel mixtures…

- Kind: Short
- Year: 2014
- Runtime: 1 min
- By: NASA Johnson
- Genres: Science, Space
- Archive: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Amazing_Flame_Comes_to_Life_in_Space_Station_Microgravity_Combustion_Science.webm)
- Licence or status: Public domain (as the archive states it)
- Credit: NASA Johnson
- Who can watch: Tweens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/commons/143032427?play=1)