Obs. : 2020-09-26
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.142e+08
Venus      6.497e+08
Earth      6.463e+08
Mars       6.463e+08
Jupiter    6.333e+08
Saturn     6.349e+08
Uranus     6.503e+08
Neptune    6.398e+08
Pluto      6.349e+08