Obs. : 2018-10-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.526e+11
Venus      3.585e+11
Earth      3.596e+11
Mars       3.565e+11
Jupiter    3.526e+11
Saturn     3.540e+11
Uranus     3.587e+11
Neptune    3.574e+11
Pluto      3.541e+11