Obs. : 2013-10-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.888e+11
Venus      3.956e+11
Earth      3.905e+11
Mars       3.890e+11
Jupiter    3.971e+11
Saturn     3.888e+11
Uranus     3.884e+11
Neptune    3.915e+11
Pluto      3.988e+11