Obs. : 2012-07-30
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.867e+11
Venus      3.896e+11
Earth      4.411e+11
Mars       4.445e+11
Jupiter    3.896e+11
Saturn     4.525e+11
Uranus     4.233e+11
Neptune    4.328e+11
Pluto      4.456e+11