Obs. : 2015-09-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.162e+11
Venus      4.262e+11
Earth      4.305e+11
Mars       4.223e+11
Jupiter    4.223e+11
Saturn     4.163e+11
Uranus     4.276e+11
Neptune    4.263e+11
Pluto      4.236e+11