Obs. : 2012-02-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.305e+11
Venus      4.335e+11
Earth      4.162e+11
Mars       4.263e+11
Jupiter    4.180e+11
Saturn     4.304e+11
Uranus     4.300e+11
Neptune    4.360e+11
Pluto      4.232e+11