Obs. : 2017-08-03
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.453e+11
Venus      3.455e+11
Earth      3.661e+11
Mars       3.391e+11
Jupiter    3.716e+11
Saturn     3.718e+11
Uranus     3.476e+11
Neptune    3.535e+11
Pluto      3.661e+11