the-telescope-times:The Calabash Nebula | Hubble) The Calabash…

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The Calabash Nebula | Hubble)

The Calabash Nebula, pictured here—which has the technical name OH 231.8+04.2—is a spectacular example of the death of a low-mass star like the Sun. 

This image taken by the NASA/European Space Agency Hubble Space Telescope shows the star going through a rapid transformation from a red giant to a planetary nebula, during which it blows its outer layers of gas and dust out into the surrounding space. The recently ejected material is spat out in opposite directions with immense speed—the gas shown in yellow is moving close to a million kilometers an hour.

Among his accepted tenets was that “as is known, there are only three colors, yellow, red, and blue”…

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Philipp Otto Runge, Color System, 1810

Among his accepted tenets was that “as is known, there are only three colors, yellow, red, and blue” (letter to Goethe of July 3, 1806). His goal was to establish the complete world of colors resulting from mixture of the three, among themselves and together with white and black.