Obs. : 2011-02-27
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.019e+11
Venus      3.723e+11
Earth      3.795e+11
Mars       3.923e+11
Jupiter    4.045e+11
Saturn     3.616e+11
Uranus     4.045e+11
Neptune    3.923e+11
Pluto      3.601e+11