As part of its efforts to ensure safety, NASA set a 16×37-inch block of cotton-fiberglass material on fire aboard a spacecraft that’s making its way back home. Since the largest material NASA ever burned in space before this was the size of an index card, this is officially the biggest fire experiment conducted outside our planet.
The Spacecraft Fire Experiment or Saffire-I, as it’s officially called, happened aboard the Cygnus spacecraft that ferried the ISS’ largest delivery back in March.
NASA’s Glenn Research Center created a special module for the undertaking to make sure the flames don’t spread out. They then triggered the experiment from the ground a few hours after Cygnus left the ISS on June 14th. The spacecraft traveled a thousand miles before the sample stopped burning, so you can expect quite a few images from the agency. Glenn’s researchers are still waiting for data to arrive, though, you’ll have to wait at least 24 more hours to see them.
NASA plans to conduct two more fire experiments aboard a Cygnus vehicle. Saffire-II will burn 2×12-inch materials to "assess oxygen flammability limits," while Saffire-III will set another big sample on fire.