Obs. : 2009-01-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.448e+11
Venus      3.439e+11
Earth      3.466e+11
Mars       3.448e+11
Jupiter    3.452e+11
Saturn     3.410e+11
Uranus     3.439e+11
Neptune    3.453e+11
Pluto      3.373e+11