Obs. : 2020-02-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.207e+08
Venus      6.078e+08
Earth      6.094e+08
Mars       6.232e+08
Jupiter    6.261e+08
Saturn     6.261e+08
Uranus     6.001e+08
Neptune    6.207e+08
Pluto      6.261e+08