Obs. : 2025-09-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.549e+08
Venus      7.377e+08
Earth      8.428e+08
Mars       7.935e+08
Jupiter    7.775e+08
Saturn     8.328e+08
Uranus     7.919e+08
Neptune    8.328e+08
Pluto      8.758e+08