Obs. : 2025-09-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.135e+08
Venus      8.092e+08
Earth      7.654e+08
Mars       7.571e+08
Jupiter    7.958e+08
Saturn     7.669e+08
Uranus     7.940e+08
Neptune    7.669e+08
Pluto      7.852e+08