Terzi & Nicoli have a fascinating new paper analyzing over 4,400 orbital launches since 1960 to estimate "Wright's Law." This law states that a new technology's unit costs fall in proportion to cumulative experience. Essentially, it is an expression of learning-by-doing. They show:
... that the average cost of sending a kilogram to orbit has dropped from 87,023 USD in 1960 to 3,868 USD in 2025. Using a Wright's Law framework, we estimate that for each doubling of cumulative payload to orbit, the average cost of sending a kilogram to orbit decreases by 21.2% ...
This is faster than many past technologies e.g., 19th century Steam engines and recent solar photovoltaics. There is a positive feedback loop because, as launch costs fall, more stuff is launched. Their forecast is that it will cost reach $300/kg by 2040. For reference, sending a kg from LA to London by overnight express costs $5-$50/kg depending on package size. I get giddy trying to imagine all the potential new opportunities.
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