 The planetarium has been reopened for other purposes since it closed its doors as a planetarium in 1995 . On March 5 , 1998 , an initial three @-@ year agreement was signed that brought the Children 's Own Museum to the second floor of the planetarium , where the Astrocentre used to be . Due to impending construction at the adjacent Royal Ontario Museum , the contract was not renewed in late 2002 , and the Children 's Own Museum has been looking for a new location ever since . During its three @-@ year tenure in that building , it hosted nearly a half @-@ million visitors . The institution still exists , though it currently ( as of 2009 ) has no physical home . It is currently seeking suitable space to use in future endeavours . In the meantime the organization has participated in various children 's events around the city . 
