>During mitosis and meiosis, microtubules depend on a stable magnetic field to orient the mitotic spindle and ensure accurate chromosome segregation — processes

>During mitosis and meiosis, microtubules depend on a stable magnetic field to orient the mitotic spindle and ensure accurate chromosome segregation — processes critical for embryonic growth. A spacecraft lacking any magnetic field would halt human reproduction, dooming both the mission and the survival of the colony. Speaking as a biologist that's not true.