Obs. : 2020-05-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.269e+08
Venus      6.269e+08
Earth      6.303e+08
Mars       5.941e+08
Jupiter    5.985e+08
Saturn     5.962e+08
Uranus     6.152e+08
Neptune    5.962e+08
Pluto      5.985e+08