Obs. : 2019-12-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.007e+08
Venus      6.106e+08
Earth      5.989e+08
Mars       5.950e+08
Jupiter    6.007e+08
Saturn     6.126e+08
Uranus     5.942e+08
Neptune    6.053e+08
Pluto      6.113e+08