Obs. : 2017-04-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.558e+11
Venus      3.681e+11
Earth      3.695e+11
Mars       3.537e+11
Jupiter    3.596e+11
Saturn     3.812e+11
Uranus     3.630e+11
Neptune    3.681e+11
Pluto      3.822e+11