Obs. : 2017-05-29
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.861e+11
Venus      3.810e+11
Earth      3.623e+11
Mars       3.610e+11
Jupiter    3.620e+11
Saturn     3.607e+11
Uranus     3.820e+11
Neptune    3.741e+11
Pluto      3.638e+11