Obs. : 2015-05-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.801e+11
Venus      4.691e+11
Earth      4.900e+11
Mars       4.872e+11
Jupiter    4.685e+11
Saturn     4.900e+11
Uranus     4.946e+11
Neptune    5.048e+11
Pluto      4.980e+11