Obs. : 2017-07-24
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.670e+11
Venus      3.624e+11
Earth      3.616e+11
Mars       3.672e+11
Jupiter    3.654e+11
Saturn     3.611e+11
Uranus     3.517e+11
Neptune    3.522e+11
Pluto      3.616e+11