Obs. : 2013-06-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.236e+11
Venus      4.236e+11
Earth      4.461e+11
Mars       4.328e+11
Jupiter    4.279e+11
Saturn     4.633e+11
Uranus     4.348e+11
Neptune    4.365e+11
Pluto      4.461e+11