Obs. : 2009-02-14
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.603e+11
Venus      3.655e+11
Earth      3.477e+11
Mars       3.603e+11
Jupiter    3.603e+11
Saturn     3.500e+11
Uranus     3.725e+11
Neptune    3.696e+11
Pluto      3.349e+11