Obs. : 2017-12-24
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.708e+11
Venus      3.706e+11
Earth      3.662e+11
Mars       3.726e+11
Jupiter    3.726e+11
Saturn     3.706e+11
Uranus     3.604e+11
Neptune    3.613e+11
Pluto      3.686e+11