Venus takes 243 Earth days to spin once, but only 225 to orbit the Sun — so a single Venusian day outlasts its year.
Saturn is mostly hydrogen and helium, giving it a density lower than water. Find a bathtub big enough and the ringed planet would bob on the surface.
The Great Pyramid was already 2,500 years old in Cleopatra's lifetime. She lived only about 2,000 years before Apollo 11.
