To the moon and back in ninety days : a thrilling narrative of blended science and adventure (1922)
Brown, John Young, 1858-1921, Lunar Publishing Company. pbl · Providence, Kentucky : Lunar Publishing Company · leaf 69
FIG. 10. THE PLANET MARS, 1909. (Yerkes Observatory.) … FIG. 11. THE SUN, PHOTOGRAPHED WITH THESPECTROHELIOGRAPH, 1913. The white blotches are areas of intensely brilliant calciumvapor, which would be invisible on an ordinary photograph. (Yerkes Observatory.) CHAPTER Vn THE FIRST DAY OF THE VOYAGE Just at this moment, 12 oclock noon, on the day ofour…
Astronomy
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