Obs. : 2015-03-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.939e+11
Venus      4.808e+11
Earth      4.450e+11
Mars       4.755e+11
Jupiter    4.609e+11
Saturn     4.606e+11
Uranus     4.755e+11
Neptune    4.939e+11
Pluto      4.788e+11