Obs. : 2012-03-06
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.252e+11
Venus      4.203e+11
Earth      4.300e+11
Mars       4.281e+11
Jupiter    4.203e+11
Saturn     5.325e+11
Uranus     4.252e+11
Neptune    6.234e+11
Pluto      6.175e+11