Obs. : 2020-12-05
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.777e+08
Venus      6.857e+08
Earth      6.840e+08
Mars       6.760e+08
Jupiter    6.709e+08
Saturn     6.709e+08
Uranus     6.778e+08
Neptune    6.713e+08
Pluto      6.709e+08