Obs. : 2012-04-27
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.562e+11
Venus      4.296e+11
Earth      4.297e+11
Mars       4.269e+11
Jupiter    4.431e+11
Saturn     4.253e+11
Uranus     4.695e+11
Neptune    4.734e+11
Pluto      4.481e+11