Obs. : 2018-07-31
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.068e+11
Venus      3.214e+11
Earth      3.089e+11
Mars       3.089e+11
Jupiter    3.189e+11
Saturn     3.104e+11
Uranus     2.996e+11
Neptune    2.988e+11
Pluto      3.093e+11