Obs. : 2009-01-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.605e+11
Venus      3.597e+11
Earth      3.527e+11
Mars       3.540e+11
Jupiter    3.605e+11
Saturn     3.486e+11
Uranus     3.597e+11
Neptune    3.614e+11
Pluto      3.498e+11