Cai Guo Qiang «The Earth Has Its Black Hole Too» 1994.
«The series of works employing gunpowder to cause explosions are entitled Project for Extraterrestrials. Judging from this fact, it should not go unnoticed that Cai's concept extends beyond a makeshift, momentary theatricality and possesses a sensibility that perceives the earth as one of the planets. In other words, it might be described as the terrestrial space being momentarily expanded into a celestial space by means of an explosion.»
The Earth Has Its Black Hole Too: Project for Extraterrestrials No. 16 Hiroshima, Japan, 1994.