Obs. : 2017-07-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.717e+11
Venus      3.570e+11
Earth      3.604e+11
Mars       3.578e+11
Jupiter    3.804e+11
Saturn     3.625e+11
Uranus     3.548e+11
Neptune    3.552e+11
Pluto      3.604e+11