The possible future is not just longer than the past. It is unimaginably longer. - Charles Sheffield

I do not like to concatenate implausibilities.

In any civilized society, it is the individual or group who creates a problem that must have responsibility for solving it.

The Asteroid Belt contains everything from substantial bodies like Ceres, seven hundred and fifty kilometers across, all the way down to house-sized boulders, pebbles, and grains of sand. One good rule of thumb is that for every object of a given size, there will be ten times as many one-third that size.