“The Asgard would never invent a weapon that propels small weights of iron and carbon alloys, by igniting a powder of potassium nitrate, charcoal and sulfur.”

“The Asgard would never invent a weapon that propels small weights of iron and carbon alloys, by igniting a powder of potassium nitrate, charcoal and sulfur.” —Thor, Stargate SG-1, “Small Victories”