Obs. : 2017-02-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.529e+11
Venus      3.723e+11
Earth      3.691e+11
Mars       3.755e+11
Jupiter    3.598e+11
Saturn     3.435e+11
Uranus     3.755e+11
Neptune    3.633e+11
Pluto      3.468e+11