Obs. : 2025-04-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.504e+08
Venus      8.426e+08
Earth      8.483e+08
Mars       8.553e+08
Jupiter    8.766e+08
Saturn     8.426e+08
Uranus     8.765e+08
Neptune    8.504e+08
Pluto      8.434e+08