  Bose-Einstein condensates (BECs) in free fall constitute a promising source
for space-borne matter-wave interferometry. Indeed, BECs enjoy a slowly
expanding wave function, display a large spatial coherence and can be
engineered and probed by optical techniques. On a sounding rocket, we explore
matter-wave fringes of multiple spinor components of a BEC released in free
fall employing light-pulses to drive Bragg processes and induce phase
imprinting. The prevailing microgravity played a crucial role in the
observation of these interferences which not only reveal the spatial coherence
of the condensates but also allow us to measure differential forces. Our work
establishes matter-wave interferometry in space with future applications in
fundamental physics, navigation and Earth observation.
