Strangely, âposhliâ (which means âletâs goâ or âletâs head outâ in Russian) is actually the past tense of the verb meaning âTo head off on foot.â In other words, âposhliâ literally means, âWe (or they) headed off on foot.â How can a word which is in the past tense indicate the desire to head off somewhere now?
The Hill sphere, or gravitational sphere of influence, of Earth is about 1.5 Gm or 1,500,000 km in radius. This is the maximum distance at which the Earth's gravitational influence is stronger than the more distant Sun and planets.
The Earth's Diameter is 7926.41 miles. The surface area of Earth is (pi x Diameter) = 197.38 million square miles (where pi = 3.14159265358979). However, the Earth only has 57 million square miles of land (that's 36.48 billion acres; there are 640 acres per square mile). However, there are only 12 million square miles (7.68 billion acres) of arable land.