Obs. : 2019-07-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.482e+11
Venus      3.435e+11
Earth      3.450e+11
Mars       3.482e+11
Jupiter    3.496e+11
Saturn     3.450e+11
Uranus     3.363e+11
Neptune    3.356e+11
Pluto      3.450e+11