Gravitational-Wave Lunar Observatory for Cosmology
  Several large-scale experimental facilities and space-missions are being
suggested to probe the universe across the gravitational-wave (GW) spectrum.
Here we propose Gravitational-wave Lunar Observatory for Cosmology (GLOC) - the
first concept design in the NASA Artemis era for a GW observatory on the Moon.
Using feasible interferometer technologies, we find that a lunar-based
observatory is ideal for probing GW frequencies in the range between deci-Hz to
5 Hz, an astrophysically rich regime that is very challenging for both Earth-
and space-based detectors. GLOC can survey binaries with neutron stars, stellar
and intermediate-mass black holes to $\gtrsim 70\%$ of the observable volume of
our universe without significant background contamination. The sensitivity at
$\mathcal{O}(1~\mathrm{Hz})$ allows a unique window into calibrating Type Ia
supernovae. At its ultimate sensitivity limits, GLOC would trace the Hubble
expansion rate up to redshift $z \sim 3$ and test General Relativity and
$\Lambda$CDM cosmology up to $z\sim 350$.
