Obs. : 2015-04-08
Planet	Ly alpha (photons/cm^2/sec)
Mercury    5.539e+11
Venus      5.406e+11
Earth      4.858e+11
Mars       5.482e+11
Jupiter    4.988e+11
Saturn     4.802e+11
Uranus     5.539e+11
Neptune    5.286e+11
Pluto      4.868e+11