Obs. : 2020-08-01
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.475e+08
Venus      6.867e+08
Earth      6.540e+08
Mars       7.032e+08
Jupiter    6.480e+08
Saturn     6.497e+08
Uranus     6.998e+08
Neptune    6.788e+08
Pluto      6.480e+08