Obs. : 2018-09-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.837e+11
Venus      3.990e+11
Earth      3.986e+11
Mars       3.950e+11
Jupiter    4.121e+11
Saturn     3.946e+11
Uranus     4.001e+11
Neptune    4.035e+11
Pluto      3.950e+11