Obs. : 2020-01-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.254e+08
Venus      6.392e+08
Earth      6.298e+08
Mars       6.111e+08
Jupiter    6.254e+08
Saturn     6.389e+08
Uranus     6.258e+08
Neptune    6.392e+08
Pluto      6.389e+08