Obs. : 2020-08-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.462e+08
Venus      6.617e+08
Earth      6.579e+08
Mars       6.612e+08
Jupiter    6.541e+08
Saturn     6.541e+08
Uranus     6.650e+08
Neptune    6.588e+08
Pluto      6.541e+08