Obs. : 2020-01-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.349e+08
Venus      6.428e+08
Earth      6.273e+08
Mars       6.139e+08
Jupiter    6.349e+08
Saturn     6.453e+08
Uranus     6.238e+08
Neptune    6.398e+08
Pluto      6.453e+08