Obs. : 2025-06-06
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.814e+08
Venus      7.604e+08
Earth      7.781e+08
Mars       7.933e+08
Jupiter    7.814e+08
Saturn     7.561e+08
Uranus     7.774e+08
Neptune    7.529e+08
Pluto      7.747e+08