It is 1845, and Hannah Gardner Price has lived all twenty-four years of her life according to the principles of the Nantucket Quaker community in which she was raised, where simplicity and restraint are valued above all, and a woman's path is expected to lead to marriage and motherhood. But up on the rooftop each night, Hannah pursues a very different -- and elusive -- goal: discovering a comet and thereby winning a gold medal awarded by the King...