Obs. : 2010-01-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.496e+11
Venus      3.589e+11
Earth      3.624e+11
Mars       3.696e+11
Jupiter    3.572e+11
Saturn     3.547e+11
Uranus     3.542e+11
Neptune    3.614e+11
Pluto      3.496e+11