Obs. : 2017-07-27
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.782e+11
Venus      3.599e+11
Earth      3.608e+11
Mars       3.645e+11
Jupiter    3.803e+11
Saturn     3.614e+11
Uranus     3.552e+11
Neptune    3.589e+11
Pluto      3.608e+11