Obs. : 2012-10-29
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.187e+11
Venus      4.376e+11
Earth      4.305e+11
Mars       3.986e+11
Jupiter    4.337e+11
Saturn     4.412e+11
Uranus     3.779e+11
Neptune    3.653e+11
Pluto      3.900e+11