Obs. : 2025-06-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.271e+08
Venus      8.049e+08
Earth      8.123e+08
Mars       8.273e+08
Jupiter    8.238e+08
Saturn     8.072e+08
Uranus     8.114e+08
Neptune    8.072e+08
Pluto      8.105e+08