Obs. : 2009-04-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.564e+11
Venus      3.481e+11
Earth      3.439e+11
Mars       3.415e+11
Jupiter    3.329e+11
Saturn     3.440e+11
Uranus     3.481e+11
Neptune    3.374e+11
Pluto      3.309e+11