Obs. : 2019-12-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.080e+08
Venus      6.131e+08
Earth      6.076e+08
Mars       6.028e+08
Jupiter    6.129e+08
Saturn     6.142e+08
Uranus     6.043e+08
Neptune    6.081e+08
Pluto      6.142e+08