Obs. : 2018-04-14
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.680e+11
Venus      3.655e+11
Earth      3.646e+11
Mars       3.629e+11
Jupiter    3.646e+11
Saturn     3.646e+11
Uranus     3.687e+11
Neptune    3.662e+11
Pluto      3.629e+11