Obs. : 2023-04-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.859e+08
Venus      8.857e+08
Earth      9.190e+08
Mars       8.978e+08
Jupiter    9.029e+08
Saturn     9.271e+08
Uranus     8.859e+08
Neptune    9.163e+08
Pluto      9.119e+08