Obs. : 2012-04-26
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.470e+11
Venus      4.264e+11
Earth      4.335e+11
Mars       4.251e+11
Jupiter    4.359e+11
Saturn     4.269e+11
Uranus     4.568e+11
Neptune    4.662e+11
Pluto      4.454e+11