Obs. : 2020-11-29
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.800e+08
Venus      6.762e+08
Earth      7.275e+08
Mars       7.333e+08
Jupiter    7.177e+08
Saturn     7.177e+08
Uranus     7.309e+08
Neptune    7.346e+08
Pluto      7.074e+08