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18-10-2017
Geography

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Prior to its discovery on earth helium's existence was first confirmed in the sun how is this possible

Respuesta :

29-10-2017

This is possible because Pierre-Jules-CĂ©sar Janssen, A french Astronomer, Discovered a thin yellow line while studying a total solar eclipse. The spectral lines in this thin yellow line was the same as excited helium molecules.

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