Obs. : 2017-07-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.580e+11
Venus      3.695e+11
Earth      3.675e+11
Mars       3.558e+11
Jupiter    3.688e+11
Saturn     3.661e+11
Uranus     3.726e+11
Neptune    3.703e+11
Pluto      3.663e+11