Obs. : 2018-12-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.525e+11
Venus      3.504e+11
Earth      3.536e+11
Mars       3.585e+11
Jupiter    3.546e+11
Saturn     3.606e+11
Uranus     3.521e+11
Neptune    3.585e+11
Pluto      3.617e+11