I wondered, am I the only one who thinks 12 gallons isn't very much? I couldn't help envisioning a tiny lunar base surrounded by acres of mine tailing devastation.
So I calculated how much rock it takes to make a ton (assuming basalt; lunar highland anorthosite would be a little less dense). Turns out it's not very much: a ton of basalt would make a cube about 8.6 feet on a side. So okay, I guess it would take quite a while to work up to those acres of devastation. It was an interesting calculation, anyway; rock is a lot less dense than I thought.
You can read the details in my SJAA Ephemeris column this month, Full of Moon.
[ 18:55 Nov 21, 2010 More science/astro | permalink to this entry ]