Obs. : 2017-01-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.424e+11
Venus      3.696e+11
Earth      3.617e+11
Mars       3.696e+11
Jupiter    3.449e+11
Saturn     3.395e+11
Uranus     3.684e+11
Neptune    3.667e+11
Pluto      3.485e+11