
NASA Teaches Kids How To Cook S’mores With The Sun
But don’t be in a hurry — the instructions point out that after propping up your solar flaps, you have to wait at least 30 minutes for the “oven” to “preheat.” Once the marshmallows are in the oven, the instructions note that it might take up to a full hour for them to melt, plus an additional period of time to melt the chocolate.