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
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. Extensive surface preparation, such as grinding, crack repair, and spall repair, can add as much as $2 per square foot to the overall cost of the floor. 2  If a full resurfacing is needed, expect to tack on another $2 to $3 per square foot (for a $4 to $5 per square foot increase).