Obs. : 2015-04-03
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.913e+11
Venus      5.277e+11
Earth      4.894e+11
Mars       5.112e+11
Jupiter    5.118e+11
Saturn     4.901e+11
Uranus     4.934e+11
Neptune    4.779e+11
Pluto      4.748e+11