Roland Gangloff, former earth science curator at the museum, once uncovered a mystery when researching the Aggie Creek meteorite, the largest heavenly body fragment ever found in Alaska. When miners discovered the iron-nickel meteorite clanging around in the rock tumbler of a gold dredge in 1942, it was reported to weigh about 95 pounds. Today it weighs 57 pounds. Its curious weight-loss program is what Gangloff calls "one of those great Alaska mysteries."