Edit: it shouldn't be hard, even for a space cadet, but the primacy of personal conscience has its way with objective. The article from Catholic Family News is worthwhile.
First of all, Saint Thomas Aquinas taught that “out of reverence for this Sacrament, nothing touches it but what is consecrated.” Thus, he said the sacred vessels of the altar are consecrated for this holy purpose, but also, the priest’s hands are consecrated for touching this Sacrament. And St. Thomas said that it is therefore not lawful for anyone else to touch it, except to save it from desecration. (Summa, III, Q. 82. Art. 3)
This reverence for the Blessed Sacrament, and even for the smallest particles, was incorporated into the traditional Mass — the Old Latin Mass — which contained strict rubrics on this point:
[Christian Daily] Astronaut Mike Hopkins, a devout [sic] Catholic, sometimes finds himself praying and also taking Communion inside the Cupola, a small module on the International Space Station (ISS) with seven large bay windows that give a panoramic view of the Earth.
Under a special arrangement with the Church, the astronaut takes six consecrated hosts with him aboard the space module. When broken into pieces, the hosts are enough for a once-a-week Communion for Hopkins on-board the ISS.