Obs. : 2018-06-29
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.598e+11
Venus      3.591e+11
Earth      3.548e+11
Mars       3.479e+11
Jupiter    3.572e+11
Saturn     3.537e+11
Uranus     3.565e+11
Neptune    3.465e+11
Pluto      3.506e+11