Obs. : 2013-12-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.004e+11
Venus      4.135e+11
Earth      3.805e+11
Mars       3.816e+11
Jupiter    3.741e+11
Saturn     3.883e+11
Uranus     4.167e+11
Neptune    4.251e+11
Pluto      4.066e+11