Obs. : 2020-09-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    5.949e+08
Venus      6.261e+08
Earth      6.279e+08
Mars       6.303e+08
Jupiter    6.188e+08
Saturn     6.188e+08
Uranus     6.341e+08
Neptune    6.294e+08
Pluto      6.188e+08