Obs. : 2016-04-29
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.096e+11
Venus      4.137e+11
Earth      4.265e+11
Mars       4.265e+11
Jupiter    4.083e+11
Saturn     4.291e+11
Uranus     4.144e+11
Neptune    4.155e+11
Pluto      4.288e+11