Obs. : 2011-05-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.428e+11
Venus      4.428e+11
Earth      4.014e+11
Mars       4.428e+11
Jupiter    4.440e+11
Saturn     4.365e+11
Uranus     4.371e+11
Neptune    4.093e+11
Pluto      3.961e+11