Obs. : 2017-07-11
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.674e+11
Venus      3.652e+11
Earth      3.792e+11
Mars       3.625e+11
Jupiter    3.799e+11
Saturn     3.792e+11
Uranus     3.660e+11
Neptune    3.714e+11
Pluto      3.777e+11