Obs. : 2014-07-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.561e+11
Venus      4.561e+11
Earth      3.555e+11
Mars       3.513e+11
Jupiter    4.413e+11
Saturn     3.516e+11
Uranus     4.111e+11
Neptune    3.706e+11
Pluto      3.538e+11