Obs. : 2019-12-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    5.887e+08
Venus      6.053e+08
Earth      5.959e+08
Mars       5.810e+08
Jupiter    6.035e+08
Saturn     6.051e+08
Uranus     5.945e+08
Neptune    6.016e+08
Pluto      6.051e+08