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 Ιανουαρίου 2016
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CH17 V13