Obs. : 2013-10-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.178e+11
Venus      4.172e+11
Earth      3.792e+11
Mars       4.197e+11
Jupiter    4.225e+11
Saturn     4.178e+11
Uranus     3.883e+11
Neptune    3.953e+11
Pluto      4.170e+11