Obs. : 2019-12-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.039e+08
Venus      6.173e+08
Earth      6.084e+08
Mars       5.961e+08
Jupiter    6.132e+08
Saturn     6.166e+08
Uranus     6.062e+08
Neptune    6.132e+08
Pluto      6.166e+08