Obs. : 2010-04-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.772e+11
Venus      3.772e+11
Earth      3.697e+11
Mars       3.766e+11
Jupiter    3.669e+11
Saturn     3.697e+11
Uranus     3.669e+11
Neptune    3.589e+11
Pluto      3.502e+11