Obs. : 2012-08-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.510e+11
Venus      4.436e+11
Earth      3.928e+11
Mars       4.566e+11
Jupiter    4.349e+11
Saturn     4.625e+11
Uranus     3.865e+11
Neptune    3.835e+11
Pluto      4.149e+11