Obs. : 2012-09-01
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.790e+11
Venus      4.214e+11
Earth      4.577e+11
Mars       3.983e+11
Jupiter    4.346e+11
Saturn     3.983e+11
Uranus     4.492e+11
Neptune    4.583e+11
Pluto      4.419e+11