Obs. : 2017-06-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.683e+11
Venus      3.711e+11
Earth      3.759e+11
Mars       3.684e+11
Jupiter    3.727e+11
Saturn     3.751e+11
Uranus     3.706e+11
Neptune    3.734e+11
Pluto      3.764e+11