Science: Star Dust Blue

When Professor Auguste Piccard floated back to earth from the stratosphere, he reported that the sky up there was deep, dark blue in daytime (TIME, June 8, 1931). Last week, floating down from a flight of logic. Astronomer Otto Struve of Yerkes Observatory declared in the Astrophysical Journal that the universal sky should not be dark, day or night. It should be light blue. Starlight striking star dust should make the general illumination of cosmic space as blue as the daylight sky seen from the surface of Earth. If Professor Piccard makes his...

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