Obs. : 2024-04-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    9.001e+08
Venus      9.001e+08
Earth      1.056e+09
Mars       9.307e+08
Jupiter    8.690e+08
Saturn     9.389e+08
Uranus     8.690e+08
Neptune    9.307e+08
Pluto      9.705e+08