Obs. : 2017-04-14
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.719e+11
Venus      3.820e+11
Earth      3.715e+11
Mars       3.558e+11
Jupiter    3.627e+11
Saturn     3.814e+11
Uranus     3.796e+11
Neptune    3.808e+11
Pluto      3.835e+11