De qu� estan compostes les gal�xies? - 12/04/20
La Terra és plana · Corporaci� Catalana de Mitjans Audiovisuals, SA
April 12, 202020m 5s
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Show Notes
Avui, amb el Joan Anton Catal�, visitem les ciutats de l'espai: les gal�xies. De qu� estan fetes? Quina forma tenen? Com de gran �s la Via L�ctia?