Obs. : 2013-04-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.192e+11
Venus      4.004e+11
Earth      4.408e+11
Mars       4.004e+11
Jupiter    3.861e+11
Saturn     4.408e+11
Uranus     4.107e+11
Neptune    4.459e+11
Pluto      4.508e+11