Obs. : 2009-11-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.573e+11
Venus      3.489e+11
Earth      3.664e+11
Mars       3.562e+11
Jupiter    3.662e+11
Saturn     3.481e+11
Uranus     3.679e+11
Neptune    3.662e+11
Pluto      3.619e+11