The beautiful symmetry of a total solar eclipse happens because —by pure chance— the sun is 400 times larger than the moon, but is also 400 times farther from Earth, making the two bodies appear the exact same size in the sky.

Scientists believe there is a ninth planet in our solar system that is roughly 10 times larger than Earth. They haven’t been able to locate it yet but they know it’s there because of its gravitational effects on other objects.

In 1728, the philosopher Voltaire got rich by outsmarting the lottery. The prize money was larger than the cost of all the tickets combined, so Voltaire and his friend formed a syndicate, bought all the tickets, and won several times.