Obs. : 2010-01-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.499e+11
Venus      3.624e+11
Earth      3.650e+11
Mars       3.777e+11
Jupiter    3.624e+11
Saturn     3.567e+11
Uranus     3.549e+11
Neptune    3.660e+11
Pluto      3.499e+11