Obs. : 2012-09-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.777e+11
Venus      4.242e+11
Earth      4.281e+11
Mars       4.916e+11
Jupiter    4.052e+11
Saturn     4.930e+11
Uranus     4.146e+11
Neptune    4.281e+11
Pluto      4.628e+11