Obs. : 2017-07-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.627e+11
Venus      3.608e+11
Earth      3.664e+11
Mars       3.597e+11
Jupiter    3.749e+11
Saturn     3.664e+11
Uranus     3.524e+11
Neptune    3.544e+11
Pluto      3.647e+11