Obs. : 2020-01-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.360e+08
Venus      6.303e+08
Earth      6.235e+08
Mars       6.106e+08
Jupiter    6.315e+08
Saturn     6.315e+08
Uranus     6.155e+08
Neptune    6.293e+08
Pluto      6.315e+08