Obs. : 2020-02-03
Planet	Ly alpha (photons/cm^2/sec)
Mercury    5.933e+08
Venus      5.886e+08
Earth      6.138e+08
Mars       6.144e+08
Jupiter    6.183e+08
Saturn     6.174e+08
Uranus     5.876e+08
Neptune    5.886e+08
Pluto      6.174e+08