An explosion that sent a pillar of smoke rising over the hills near the Simi Dog Park in Simi Valley Friday was special effects for the upcoming “Jackass” sequel, “Jackass” star Johnny Knoxville ...

What makes for a realistic explosion in space? In 1976, when pyrotechnic artist Joe Viskocil blew up the Death Star, he noted that “No one has actually seen a space station or ship blown to ...