Obs. : 2012-03-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.232e+11
Venus      4.219e+11
Earth      4.307e+11
Mars       4.307e+11
Jupiter    4.200e+11
Saturn     4.212e+11
Uranus     4.200e+11
Neptune    4.190e+11
Pluto      4.150e+11