Astronomy – Ch. 17 The Nature of Stars (12 of 37) Brightness Explained (2 Ways)

Astronomy – Ch. 17 The Nature of Stars (12 of 37) Brightness Explained (2 Ways)
ΑΣΤΡΟΝΟΜΙΑ - VIDEO Η ΦΥΣΗ ΤΩΝ ΑΣΤΡΩΝ

Astronomy – Ch. 17 The Nature of Stars (12 of 37) Brightness Explained (2 Ways)

1 Ιανουαρίου 2016
[ot-video][/ot-video]
CH17 V12