Obs. : 2018-07-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.504e+11
Venus      3.512e+11
Earth      3.618e+11
Mars       3.597e+11
Jupiter    3.606e+11
Saturn     3.618e+11
Uranus     3.536e+11
Neptune    3.554e+11
Pluto      3.625e+11