Obs. : 2017-08-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.495e+11
Venus      3.624e+11
Earth      3.748e+11
Mars       3.509e+11
Jupiter    3.616e+11
Saturn     3.697e+11
Uranus     3.701e+11
Neptune    3.714e+11
Pluto      3.706e+11