Would a Priest Offer Confessions on the International Space Station?

If a priest were to offer mass on the international space station, would the only one to be able to grant faculties for him to preach here confessions or witness marriages be the pope? The more important question is whether a mass in ase with micro gravity could either even be offered validly. Would the wine be able to stay in a chalice in a valid manner? So we'll take the two questions independently.