spindle organization astral microtubule organization A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of astral microtubules, any of the spindle microtubules that radiate in all directions from the spindle poles. biological_process astral microtubule organization and biogenesis astral microtubule organisation GO:0030953 cytoplasmic microtubule organization