Obs. : 2011-04-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.749e+11
Venus      3.929e+11
Earth      4.319e+11
Mars       3.771e+11
Jupiter    3.749e+11
Saturn     4.319e+11
Uranus     3.771e+11
Neptune    4.017e+11
Pluto      4.203e+11