Obs. : 2010-01-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.617e+11
Venus      3.617e+11
Earth      3.598e+11
Mars       3.598e+11
Jupiter    3.820e+11
Saturn     3.459e+11
Uranus     3.819e+11
Neptune    3.820e+11
Pluto      3.554e+11