Obs. : 2013-12-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.149e+11
Venus      4.168e+11
Earth      4.253e+11
Mars       3.981e+11
Jupiter    4.191e+11
Saturn     4.137e+11
Uranus     4.408e+11
Neptune    4.267e+11
Pluto      4.155e+11