Obs. : 2020-05-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.388e+08
Venus      6.328e+08
Earth      6.250e+08
Mars       6.173e+08
Jupiter    6.185e+08
Saturn     6.185e+08
Uranus     6.394e+08
Neptune    6.233e+08
Pluto      6.185e+08