Obs. : 2009-02-22
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.428e+11
Venus      3.518e+11
Earth      3.429e+11
Mars       3.428e+11
Jupiter    3.428e+11
Saturn     3.415e+11
Uranus     3.545e+11
Neptune    3.497e+11
Pluto      3.396e+11