Sensitivity of the method for detecting transient interstellar clouds using ²⁶Al in lunar soil (the black line). We assumed the absence of heliospheric modulation within the cloud, i.e. ϕ = 0 MV, caused by the LISM density, n_H = 2.9 ⋅ 10³ particles cm⁻³. The magenta cross indicates the ⁶⁰Fe enhancement (its peak phase) in sea sediments at the Earth from Wallner et al. (2021) and the red star corresponds to the LLCC estimate from Opher et al. (2024).