Amerigo Vespucci 1503 Americas separate continent

Vespucci argued the Americas were a continent

In a 1503 letter, Amerigo Vespucci argued that lands reached by European navigators sailing west were a continent separate from Asia. Ancient authorities such as Ptolemy had not included these lands in their geography.

Large black holes are currently growing, not shrinking

Larger black holes lose less energy through Hawking radiation. Today, a black hole with the mass of a star absorbs more energy from the background radiation of the universe than it loses through Hawking radiation. So for now, it grows rather than slowly evaporating.

Mesopotamian writing grew out of counting

Early Mesopotamian writing began with records of numbers and goods. Over time, people added picture signs and signs for sounds. A system built for accounting gradually became able to write general language.

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Amerigo Vespucci 1503 Americas separate continent

Vespucci argued the Americas were a continent

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