Obs. : 2016-07-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.899e+11
Venus      3.899e+11
Earth      4.368e+11
Mars       4.358e+11
Jupiter    3.934e+11
Saturn     4.375e+11
Uranus     3.996e+11
Neptune    4.109e+11
Pluto      4.338e+11