Obs. : 2020-08-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.254e+08
Venus      6.536e+08
Earth      6.396e+08
Mars       6.484e+08
Jupiter    6.325e+08
Saturn     6.325e+08
Uranus     6.532e+08
Neptune    6.396e+08
Pluto      6.325e+08