Obs. : 2020-02-27
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.262e+08
Venus      6.019e+08
Earth      6.097e+08
Mars       6.169e+08
Jupiter    6.222e+08
Saturn     6.237e+08
Uranus     5.946e+08
Neptune    6.191e+08
Pluto      6.237e+08