Obs. : 2017-05-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.773e+11
Venus      3.786e+11
Earth      3.704e+11
Mars       3.705e+11
Jupiter    3.592e+11
Saturn     3.762e+11
Uranus     3.773e+11
Neptune    3.841e+11
Pluto      3.784e+11