Obs. : 2012-06-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.440e+11
Venus      4.440e+11
Earth      4.442e+11
Mars       4.694e+11
Jupiter    4.417e+11
Saturn     4.635e+11
Uranus     4.397e+11
Neptune    4.253e+11
Pluto      4.442e+11