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NASA conducts second round of fire experiments in space
Orbital ATK's Cygnus spacecraft has begun making its way back from the ISS with fiery cargo on board. NASA has conducted its second space fire experiment aboard the Cygnus, burning nine different materials to give scientists the data they need to compare their flammability in microgravity to their flammability here on Earth. Those materials include a cotton-fiberglass blend and Nomex, a flame-resistant material used to make storage bags for spacecraft. The Saffire-2 (that's the experiment's name) team also burned a plexiglass sheet used for spacecraft windows and four silicon materials at different thicknesses.
