Obs. : 2012-08-06
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.861e+11
Venus      4.211e+11
Earth      4.280e+11
Mars       3.955e+11
Jupiter    4.236e+11
Saturn     3.955e+11
Uranus     4.281e+11
Neptune    4.278e+11
Pluto      4.251e+11