Obs. : 2013-04-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.701e+11
Venus      4.899e+11
Earth      4.284e+11
Mars       4.801e+11
Jupiter    4.955e+11
Saturn     4.339e+11
Uranus     4.701e+11
Neptune    4.251e+11
Pluto      4.153e+11