Obs. : 2008-11-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.462e+11
Venus      3.520e+11
Earth      3.424e+11
Mars       3.581e+11
Jupiter    3.481e+11
Saturn     3.331e+11
Uranus     3.376e+11
Neptune    3.459e+11
Pluto      3.586e+11