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 general opinion seems to be that the mass of the earth is about 6 septillion (6,000,000,000,000,000,000,000,000) kilograms, which is equivalent to 1.32 times 10^25 pounds avoirdupois (13,200,000,000,000,000,000,000,000 lb).