Obs. : 2020-06-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.380e+08
Venus      6.253e+08
Earth      6.314e+08
Mars       6.062e+08
Jupiter    6.165e+08
Saturn     6.118e+08
Uranus     6.140e+08
Neptune    6.062e+08
Pluto      6.165e+08