Obs. : 2018-03-01
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.472e+11
Venus      3.472e+11
Earth      3.427e+11
Mars       3.418e+11
Jupiter    3.434e+11
Saturn     3.422e+11
Uranus     3.540e+11
Neptune    3.472e+11
Pluto      3.422e+11