Obs. : 2018-08-06
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.754e+11
Venus      3.994e+11
Earth      3.922e+11
Mars       3.922e+11
Jupiter    4.009e+11
Saturn     3.942e+11
Uranus     3.750e+11
Neptune    3.810e+11
Pluto      3.925e+11