|Bone-loss, muscle-atrophy, and depression afflict the crews of spaceships. Similar phenomena appear among mice fed in space. Mice kept in weightlessness provide an innovative opportunity for drug development. Space-induced conditions affecting mice, mimicking those of the elderly on earth, will afford pin-point analyses of a variety of disorders accompanying aging, leading to therapeutic discoveries and efficient drug developments. HASTIC conducts the study and development of mice satellites which will promote the progress of both the space and drug-development industries in Japan.