Obs. : 2020-04-05
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.394e+08
Venus      6.101e+08
Earth      6.226e+08
Mars       6.323e+08
Jupiter    6.295e+08
Saturn     6.295e+08
Uranus     6.346e+08
Neptune    6.394e+08
Pluto      6.295e+08