Misc: What cooking device was invented to use aboard US spaceships?

Questions

haiphong is the third largest city in which south-east asian country?

in which city would you find tuff gong international studios, built by the late bob marley?

when is halley's comet next due to appear?

what term describes the study of the behaviour of materials and substances at very low temperatures?

in what year did samuel colt patent his revolver?