Obs. : 2020-11-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.675e+08
Venus      6.594e+08
Earth      6.664e+08
Mars       6.664e+08
Jupiter    7.193e+08
Saturn     7.193e+08
Uranus     6.664e+08
Neptune    6.826e+08
Pluto      7.193e+08