Obs. : 2015-12-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.503e+11
Venus      4.530e+11
Earth      4.310e+11
Mars       4.416e+11
Jupiter    4.379e+11
Saturn     4.603e+11
Uranus     4.175e+11
Neptune    4.174e+11
Pluto      4.595e+11