Obs. : 2010-01-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.489e+11
Venus      3.550e+11
Earth      3.720e+11
Mars       3.698e+11
Jupiter    3.553e+11
Saturn     3.548e+11
Uranus     3.545e+11
Neptune    3.553e+11
Pluto      3.489e+11