Obs. : 2019-12-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    5.968e+08
Venus      6.206e+08
Earth      6.044e+08
Mars       5.938e+08
Jupiter    6.161e+08
Saturn     6.181e+08
Uranus     6.038e+08
Neptune    6.131e+08
Pluto      6.206e+08