Obs. : 2008-12-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.608e+11
Venus      3.584e+11
Earth      3.487e+11
Mars       3.561e+11
Jupiter    3.627e+11
Saturn     3.462e+11
Uranus     3.491e+11
Neptune    3.584e+11
Pluto      3.608e+11