Obs. : 2008-10-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.371e+11
Venus      3.554e+11
Earth      3.513e+11
Mars       3.513e+11
Jupiter    3.594e+11
Saturn     3.383e+11
Uranus     3.517e+11
Neptune    3.528e+11
Pluto      3.601e+11