Obs. : 2018-06-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.553e+11
Venus      3.575e+11
Earth      3.595e+11
Mars       3.558e+11
Jupiter    3.616e+11
Saturn     3.591e+11
Uranus     3.560e+11
Neptune    3.503e+11
Pluto      3.590e+11