Obs. : 2015-10-31
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.805e+11
Venus      4.472e+11
Earth      4.187e+11
Mars       4.472e+11
Jupiter    4.472e+11
Saturn     4.860e+11
Uranus     4.304e+11
Neptune    4.499e+11
Pluto      4.796e+11