If a truck driver were calculating the distance needed to get from one location to another, why is it important that he correctly convert from the u. s. to the metric system? give a specific example of the errors that could occur if the driver fails to do this.

Let me give you an example of a very important NASA mission that was worth about 16 billion dollars:
so NASA hired multiple groups,one to calculate how much fuel the rocket needed and another group to put that fuel(BTW it was a mission to Mars)
so the people who were measuring how much fuel was needed were chinese and they used the metric system to calculate but when they sent the calculations to the fuel putters who were Americans they didn't put the right amount of fuel because the chinese didn't that u.s doesn't use the matric system and they put the wrong amount of fuel and NASA lost the 16 billion dollar mission because the rocket didn't have enough fuel to come back.

so my point is that if the matric system isn't changes to u.s system alot of misunderstanding can be cause and people won't be able to understand the difference between miles and kilometers. 
i hope this helps you.

There would be one bar shorter than the bar for peaches.

Science27 of the most iconic, jaw-dropping photos of the earth and the moon from spacedave mosher  oct 1, 2018, 11: 13 am etnasa/flickrapollo 11 astronauts took this photo of earth on july 20, 1969.from the ground, earth looks like a boundless fertile plain that beckons to be explored and exploited.but astronauts would beg -  and even plead  - to differ."you realize that people often say, 'i hope to go to heaven when i die,'" jim lovell, an astronaut who flew on the apollo 8 and apollo 13 missions to the moon, previously  told business insider. "in reality, if you think about it, you go to heaven when you're born."lovell has seen first-hand that we live on a tiny rock hopelessly lost in the void. he's also quick to tell you it's the only one we've got - a  fragile spaceship  for more than 7 billion people: "you arrive on a planet that has the proper mass, has the gravity to contain water and an atmosphere, which are the very essentials for life. and you arrive on this planet that's orbiting a star just at the right distance - not too far to be too cold, or too close to be too hot - and just at the right distance to absorb that star's energy and then, with that energy, cause life to evolve here in the first place. in reality, you know, god has really given us a stage, just looking at where we were around the moon, a stage on which we perform. and how that play turns out is up to us, i guess."humanity has recorded photos of earth from hundreds, thousands, millions, and even billions of miles away, some of them taken by lovell himself.these images not only scientists study our dynamic world, but also understand how a habitable planet looks from afar, which aids the search for  more worlds. most importantly, however, the images underscore our peculiar existence on  a mote of cosmic dust.take a moment to ponder 27 of the most arresting images of earth that humankind has ever captured from space.a