Without realizing it, Pigafetta had just recorded an observation of great consequence. These “clouds” are in fact two irregular dwarf galaxies orbiting our own galaxy and containing billions of stars enveloped in a gaseous blanket; they are known today as the Magellanic Clouds. The larger one, Nubecula Major, is about 150,000 light-years away, the smaller, Nubecula Minor, even farther, about 200,000 light-years. To the naked eye, they resemble pieces of the Milky Way torn off and flung across the heavens. Until 1994, they were considered the galaxies nearest to ours. The larger of the two
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