NASA to set fire in space for science, safety

The Orbital ATK Cygnus spacecraft (L) departs the International Space Station after its release from the Canadarm2 in this still image from NASA TV taken June 14, 2016. (Source: NASA TV/Handout via Reuters)
An unmanned cargo ship pulled away from the International Space Station on Tuesday to stage the first of three planned NASA experiments on how big fires grow in space, an important test for astronaut safety.
Previous experiments in space were limited to the incineration of samples no bigger