  Van der Waals heterostructures composed of transition metal dichalcogenide
monolayers (TMDs) are characterized by their truly rich excitonic properties
which are determined by their structural, geometric and electronic properties:
In contrast to pure monolayers, electrons and holes can be hosted in different
materials, resulting in highly tunable dipolar manyparticle complexes. However,
for genuine spatially indirect excitons, the dipolar nature is usually
accompanied by a notable quenching of the exciton oscillator strength. Via
electric and magnetic field dependent measurements, we demonstrate, that a
slightly biased pristine bilayer MoS$_2$ hosts strongly dipolar excitons, which
preserve a strong oscillator strength. We scrutinize their giant dipole moment,
and shed further light on their orbital- and valley physics via bias-dependent
magnetic field measurements.
