Obs. : 2026-07-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.099e+08
Venus      6.756e+08
Earth      7.256e+08
Mars       7.615e+08
Jupiter    6.925e+08
Saturn     7.980e+08
Uranus     7.867e+08
Neptune    7.795e+08
Pluto      7.148e+08