Obs. : 2025-08-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.494e+08
Venus      8.430e+08
Earth      8.035e+08
Mars       8.311e+08
Jupiter    8.430e+08
Saturn     8.068e+08
Uranus     8.249e+08
Neptune    8.068e+08
Pluto      7.978e+08