Upcoming studies at the CERN Large Hadron Collider (LHC) aim to extend the rapidity coverage in measurements of the production cross section of antinuclei $\overline{d}$ and $\overline{{}^3\mathrm{He}}$. I illustrate the impact of such studies on cosmic ray (CR) flux predictions, important, in turn, for the interpretation of results from CR experiments. I show that, in terms of the rapidity effect, covering the range $\left|y\right|<1.5$ at the LHC should be sufficient for the astrophysical CR calculation. Important extrapolation remains in other aspects of the problem, notably, $\sqrt{s}$.

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• Cosmic ray composition & spectra
• Nuclear astrophysics
• Nuclear reactions
• Relativistic heavy-ion collisions