Obs. : 2015-04-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.523e+11
Venus      4.507e+11
Earth      5.037e+11
Mars       4.523e+11
Jupiter    4.441e+11
Saturn     5.094e+11
Uranus     4.545e+11
Neptune    4.645e+11
Pluto      4.916e+11