Obs. : 2016-12-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    2.710e+11
Venus      2.719e+11
Earth      2.632e+11
Mars       2.711e+11
Jupiter    2.535e+11
Saturn     2.607e+11
Uranus     2.653e+11
Neptune    2.711e+11
Pluto      2.710e+11