Obs. : 2011-02-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.047e+11
Venus      3.737e+11
Earth      3.900e+11
Mars       3.931e+11
Jupiter    4.109e+11
Saturn     3.749e+11
Uranus     4.109e+11
Neptune    3.931e+11
Pluto      3.635e+11