universe mass-energy density ordinary matter dark matter dark energy shares

Ordinary matter makes up less than 5% of the universe

The matter that makes stars, planets, people, and other familiar objects accounts for less than 5% of the universe's total mass and energy. Dark matter makes up about 27%, while dark energy accounts for about 68%.

Germany reunited without creating a new state

In 1990, East Germany’s five re-created states joined the existing Federal Republic, the state that had been West Germany. That same state continued with its political culture, Western alignment, and international memberships.

Rome raised taxes after losing African revenue

When Vandals captured Carthage, the Western Roman Empire lost African tax income equal to the cost of nearly 40,000 foot soldiers or more than 20,000 horsemen. The regime raised taxes even though peasants could pay no more, while protecting displaced landowners and letting wealthy people avoid taxes.

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universe mass-energy density ordinary matter dark matter dark energy shares

Ordinary matter makes up less than 5% of the universe

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