Obs. : 2009-07-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.521e+11
Venus      3.467e+11
Earth      3.461e+11
Mars       3.517e+11
Jupiter    3.441e+11
Saturn     3.692e+11
Uranus     3.424e+11
Neptune    3.441e+11
Pluto      3.577e+11