Obs. : 2020-01-06
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.260e+08
Venus      6.399e+08
Earth      6.201e+08
Mars       6.082e+08
Jupiter    6.260e+08
Saturn     6.408e+08
Uranus     6.182e+08
Neptune    6.343e+08
Pluto      6.408e+08