3 ms·
A 4,000 km diameter is the figure in the article.
by Jeff_Brown 5y ago
A 4,000 km diameter is the figure in the article.
- ncmncm 5y agoA 4000 km-across mouth, at the front, but how far in front of the pinch point must that be? At issue is how to hold it out there, with the whole structure under compressive stress, without a huge structural mass.