  The experiment involving the entanglement of two massive particles through
gravitational fields has been devised to discern the quantum attributes of
gravity. In this paper, we present a scheme to extend this experiment's
applicability to more generalized curved spacetimes, with the objective of
validating universal quantum gravity within broader contexts. Specifically, we
direct our attention towards the quantum gravity induced entanglement of mass
(QGEM) in astrophysical phenomena, such as particles traversing the
interstellar medium. Notably, we ascertain that the gravitational field within
curved spacetime can induce observable entanglement between particle pairs in
both scenarios, even when dealing with particles significantly smaller than
mesoscopic masses. Furthermore, we obtain the characteristic spectra of QGEM
across diverse scenarios, shedding light on potential future experimental
examinations. This approach not only establishes a more pronounced and
extensive manifestation of the quantum influences of gravity compared to the
original scheme but also opens avenues for prospective astronomical
experiments. These experiments, aligned with our postulates, hold immense
advantages and implications for the detection of quantum gravity and can be
envisioned for future design.
