Obs. : 2020-01-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.364e+08
Venus      6.333e+08
Earth      6.251e+08
Mars       6.133e+08
Jupiter    6.287e+08
Saturn     6.364e+08
Uranus     6.186e+08
Neptune    6.287e+08
Pluto      6.364e+08