Obs. : 2009-01-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.502e+11
Venus      3.469e+11
Earth      3.470e+11
Mars       3.476e+11
Jupiter    3.502e+11
Saturn     3.405e+11
Uranus     3.469e+11
Neptune    3.499e+11
Pluto      3.447e+11