Obs. : 2015-05-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.882e+11
Venus      4.772e+11
Earth      4.750e+11
Mars       4.940e+11
Jupiter    4.478e+11
Saturn     4.750e+11
Uranus     4.933e+11
Neptune    4.803e+11
Pluto      4.762e+11