Obs. : 2018-07-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.293e+11
Venus      3.380e+11
Earth      3.438e+11
Mars       3.416e+11
Jupiter    3.451e+11
Saturn     3.438e+11
Uranus     3.347e+11
Neptune    3.383e+11
Pluto      3.420e+11