Obs. : 2017-07-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.575e+11
Venus      3.729e+11
Earth      3.657e+11
Mars       3.564e+11
Jupiter    3.704e+11
Saturn     3.657e+11
Uranus     3.734e+11
Neptune    3.678e+11
Pluto      3.641e+11