1. A

    sky gradient as seen from stratosphere?

    Hi all. OK so these were shot with the same camera with same settings. Both are supposedly at 28 km altitude in the stratosphere. Why does in the first image (NOT MINE) the sky appear pitch black while on the rest it is slowly fades to dark blue? Any chance when the sun is in the horizon...
  2. O

    colour of sky

    why is sky blue? why not violet? Coz I know that shorter wavelength scattered more than longer wavelength. Violet is the shortest wavelength so why not violet?