Obs. : 2020-06-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.404e+08
Venus      6.417e+08
Earth      6.469e+08
Mars       6.227e+08
Jupiter    6.346e+08
Saturn     6.346e+08
Uranus     6.389e+08
Neptune    6.232e+08
Pluto      6.346e+08