Obs. : 2013-06-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.308e+11
Venus      4.308e+11
Earth      4.243e+11
Mars       4.360e+11
Jupiter    4.354e+11
Saturn     4.321e+11
Uranus     4.435e+11
Neptune    4.295e+11
Pluto      4.230e+11