Obs. : 2013-03-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.873e+11
Venus      4.785e+11
Earth      4.075e+11
Mars       4.583e+11
Jupiter    4.216e+11
Saturn     4.198e+11
Uranus     4.583e+11
Neptune    4.873e+11
Pluto      4.550e+11