Obs. : 2019-12-14
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.044e+08
Venus      6.191e+08
Earth      6.108e+08
Mars       5.937e+08
Jupiter    6.155e+08
Saturn     6.162e+08
Uranus     6.103e+08
Neptune    6.171e+08
Pluto      6.162e+08