Obs. : 2019-12-10
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.006e+08
Venus      6.214e+08
Earth      6.074e+08
Mars       5.981e+08
Jupiter    6.180e+08
Saturn     6.237e+08
Uranus     6.060e+08
Neptune    6.142e+08
Pluto      6.237e+08