Obs. : 2025-05-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.986e+08
Venus      7.828e+08
Earth      8.309e+08
Mars       8.099e+08
Jupiter    7.959e+08
Saturn     7.740e+08
Uranus     7.986e+08
Neptune    7.828e+08
Pluto      7.725e+08