Astronomy – Ch. 17 The Nature of Stars (13 of 37) Luminosity and Brightness (Luminosity Defined)

Astronomy – Ch. 17 The Nature of Stars (13 of 37) Luminosity and Brightness (Luminosity Defined)
ΑΣΤΡΟΝΟΜΙΑ - VIDEO Η ΦΥΣΗ ΤΩΝ ΑΣΤΡΩΝ

Astronomy – Ch. 17 The Nature of Stars (13 of 37) Luminosity and Brightness (Luminosity Defined)

1 Ιανουάριος 2016
[ot-video][/ot-video]
CH17 V13