Obs. : 2010-05-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.839e+11
Venus      3.937e+11
Earth      3.917e+11
Mars       4.014e+11
Jupiter    3.780e+11
Saturn     4.092e+11
Uranus     3.780e+11
Neptune    3.727e+11
Pluto      3.808e+11