Obs. : 2020-05-02
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.433e+08
Venus      6.318e+08
Earth      6.264e+08
Mars       6.219e+08
Jupiter    6.225e+08
Saturn     6.219e+08
Uranus     6.433e+08
Neptune    6.371e+08
Pluto      6.225e+08