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