  The Lunar Gravitational--Wave Antenna is a proposed low-frequency
gravitational-wave detector on the Moon surface. It will be composed of an
array of high-end cryogenic superconducting inertial sensors (CSISs). A
cryogenic environment will be used in combination with superconducting
materials to open up pathways to low-loss actuators and sensor mechanics. CSIS
revolutionizes the (cryogenic) inertial sensor field with a modelled
displacement sensitivity at 0.5 Hz of 3 orders of magnitude better than the
current state-of-the-art. It will allow the Lunar Gravitational-Wave Antenna to
be sensitive below 1 Hz, down to 1 mHz and it will also be employed in the
forthcoming Einstein Telescope --a third-generation gravitational-wave detector
which will make use of cryogenic technologies and that will have an enhanced
sensitivity below 10 Hz. Moreover, CSIS seismic data could also be employed to
obtain new insights about the Moon interior and what we can call the
Selene-physics.
