At their closest recorded distance apart, which was 34.8 million miles, it would take 182 seconds (just over three minutes). At their maximum possible distance apart, which is 250 million miles, it would take approximately 22 minutes for the signal to reach Mars.
video on the cost of concrete floors depending on the level of complexity concrete floors can cost as little as $ 2 to $ 6 a square foot or be as expensive as $ 15 to $ 30 a square foot
This price is usually for commercial floors and includes staining or scoring the floors, according to John Buteyn of Colorado Hardscapes. $6-$12/ sq ft. The typical cost for polished concrete in a residential floor because it is more difficult to get a consistent look using a smaller machine, according to Buteyn.asic cost for a polished concrete floor that requires only a few levels of grinding, according to Greg Demmert of Demmert & Assoc. in Los Angeles.