Obs. : 2017-05-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.837e+11
Venus      3.814e+11
Earth      3.644e+11
Mars       3.854e+11
Jupiter    3.589e+11
Saturn     3.659e+11
Uranus     3.837e+11
Neptune    3.713e+11
Pluto      3.674e+11