Obs. : 2017-07-31
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.525e+11
Venus      3.440e+11
Earth      3.563e+11
Mars       3.363e+11
Jupiter    3.794e+11
Saturn     3.641e+11
Uranus     3.386e+11
Neptune    3.387e+11
Pluto      3.563e+11