Obs. : 2015-01-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.769e+11
Venus      4.769e+11
Earth      4.434e+11
Mars       4.877e+11
Jupiter    4.416e+11
Saturn     4.263e+11
Uranus     4.783e+11
Neptune    4.880e+11
Pluto      4.413e+11