Obs. : 2020-02-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.086e+08
Venus      5.825e+08
Earth      6.007e+08
Mars       6.098e+08
Jupiter    6.098e+08
Saturn     6.124e+08
Uranus     5.755e+08
Neptune    6.086e+08
Pluto      6.124e+08