Obs. : 2020-11-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.797e+08
Venus      6.730e+08
Earth      6.630e+08
Mars       6.651e+08
Jupiter    7.067e+08
Saturn     6.981e+08
Uranus     6.630e+08
Neptune    6.730e+08
Pluto      7.067e+08