Obs. : 2017-08-27
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.691e+11
Venus      3.870e+11
Earth      3.680e+11
Mars       3.691e+11
Jupiter    3.688e+11
Saturn     3.572e+11
Uranus     3.742e+11
Neptune    3.680e+11
Pluto      3.606e+11