Before revision: The width of the earth 's shadow at the distance of the lunar orbit is approximately 9000 km (~ 2.6 lunar diameters), which allows people of the Earth to observe total lunar eclipses.
After revision: The width of the Earth 's shadow at the distance of the lunar orbit is approximately 9000 km (~ 2.6 lunar diameters), which allows people of the Earth to observe total lunar eclipses.