Analysis of the essential nutrients (C, N, P, K) in meteorites yielded information for calculating the amount of biomass that can be constructed from asteroid resources.[1] For example, carbonaceous asteroids are estimated to contain about 1022 kg potential resource materials,[10][11][12][13][14][15] and laboratory results suggest that they could yield a biomass on the order of 6·1020 kg, about 100,000 times more than biological matter presently on Earth.[8]