The potential for investigating combustion at the limits of flammability, and the implications for spacecraft fire safety, led to the Structures Of Flame Balls At Low Lewis-number (SOFBALL) experiment flown twice aboard the Space Shuttle in 1997. The success there led to reflight on STS-107 Research 1 mission plarned for 2002. This image is a video frame which shows MSL-1 flameballs which are intrinsically dim, thus requiring the use of image intensifiers on video cameras. The principal investigator is Dr. Paul Ronney of the University of Southern California, Los Angeles. Glenn Research in Cleveland, OH, manages the project.