Obs. : 2025-06-10
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.936e+08
Venus      7.850e+08
Earth      8.012e+08
Mars       8.010e+08
Jupiter    7.936e+08
Saturn     7.960e+08
Uranus     7.920e+08
Neptune    7.960e+08
Pluto      7.935e+08