Moon mining gains momentum as private companies plan for a lunar economy::A number of entrepreneurial groups have shared their strategies to turn the moon into a hustle and bustle world of marketable services.
An airless desert impossible to reach for and with zero impact (even indirect) on the life of for 99.999% of people, with almost as much surface are as the whole of the Americas and which is entirelly devoid of life and always will be, is the last place you need to preserve.
The difference is, there is no natural life to kill on the moon, and if it turns out to be possible, maybe even easier, to mine for necessary metals on the moon then Earth-side mining won't be necessary
Also, being able to get resources on the moon without having to ship them there from Earth will make it much easier and cheaper to launch spaceships to the rest of the solar system.
I think the shipping costs between earth and moon are ridiculous. Moon manufacturing only makes sense for supplying moon bases and transportation to other planets.
Wasn't the Moon's gravity low enough that you could basically use electromagnetic cannons to launch payloads from the surface all the way out of lunar orbit?
In the absence of an athmosphere and with only 16.6% of Earth's gravity, achieving orbit from the Moon isn't simply "not as though" as doing so from Earth, it's incredibly less so (maybe 100s of times, though I don't really have the numbers so take it with a grain) - just compare the full size (including boosters) and fuel payload of the vehicle needed to put 3 people on the Moon and those of the vehicle needed to bring them back to Earth (granted, the first vehicle had to also carry the second one, plus food, water and air for the first part of the trip).
Being at the bottom of a 1G well and having to also overcome quite a lot of air drag to get out of it massivelly adds up to the energy needed to do so, both because the whole getting out of a gravity well thing is a logarithmic progression (as you need to spend fuel to haul up the fuel that's going to be used higher u), so overcoming 6x the gravity doesn't just mean using 6x the fuel, and on top of that there are the the losses due to drag in the lower athmosphere which for example severely limit initial launch speeds (as drag is directly proportional to velocity).
Ya less gravity to fight... I'm curious what the numbers look like though, it's gotta be much more expensive than bringing stuff over on a boat from China. What advantages would mining on the moon provide?
Honestly I think a solar farm on the moon would be much better investing in at some point. I remember reading an article where a nation was experimenting with beaming energy down from orbit or some shit