ISR estimates that for $10 billion, the eleator could be built and cut launch costs to $350 per kilogram, compared with the current rate of $40,000 to $140,000.

• ISR估计需要100亿美元来建成这个电梯，可将发射费用降至350美元每千克，与此比较，现在的费率是40，000到140，000美元。