Obs. : 2020-05-01
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.506e+08
Venus      6.407e+08
Earth      6.283e+08
Mars       6.231e+08
Jupiter    6.202e+08
Saturn     6.198e+08
Uranus     6.506e+08
Neptune    6.360e+08
Pluto      6.202e+08