Obs. : 2009-09-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.441e+11
Venus      3.399e+11
Earth      3.447e+11
Mars       3.424e+11
Jupiter    3.462e+11
Saturn     3.441e+11
Uranus     3.399e+11
Neptune    3.447e+11
Pluto      3.551e+11