Obs. : 2013-04-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.929e+11
Venus      3.851e+11
Earth      4.637e+11
Mars       3.851e+11
Jupiter    3.947e+11
Saturn     4.568e+11
Uranus     3.870e+11
Neptune    4.156e+11
Pluto      4.349e+11