Obs. : 2020-06-03
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.393e+08
Venus      6.367e+08
Earth      6.468e+08
Mars       6.166e+08
Jupiter    6.305e+08
Saturn     6.239e+08
Uranus     6.335e+08
Neptune    6.171e+08
Pluto      6.305e+08