Obs. : 2020-11-06
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.775e+08
Venus      6.739e+08
Earth      6.808e+08
Mars       6.822e+08
Jupiter    6.796e+08
Saturn     6.796e+08
Uranus     6.808e+08
Neptune    6.829e+08
Pluto      6.796e+08