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
Concrete floors can obviously range in price based on a variety of factors such as level of detail, size of the project, prices for materials and labor in your market, etc. But beyond the variance of cost, it is possible to have unique concrete floors no matter what the size of your budget. At this price point, you are comparing against wood flooring ($8-$10 per square foot) and a range of ceramic and quarry tiles ($10-$12 per square foot).