Obs. : 2025-07-02
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.164e+08
Venus      7.912e+08
Earth      8.201e+08
Mars       8.189e+08
Jupiter    8.033e+08
Saturn     8.073e+08
Uranus     7.912e+08
Neptune    8.073e+08
Pluto      8.201e+08