Obs. : 2017-05-31
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.690e+11
Venus      3.670e+11
Earth      3.650e+11
Mars       3.693e+11
Jupiter    3.719e+11
Saturn     3.586e+11
Uranus     3.684e+11
Neptune    3.586e+11
Pluto      3.574e+11