Obs. : 2020-05-08
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.444e+08
Venus      6.388e+08
Earth      6.281e+08
Mars       6.156e+08
Jupiter    6.165e+08
Saturn     6.165e+08
Uranus     6.413e+08
Neptune    6.209e+08
Pluto      6.165e+08