Obs. : 2017-01-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.078e+11
Venus      3.097e+11
Earth      2.991e+11
Mars       3.097e+11
Jupiter    2.999e+11
Saturn     3.078e+11
Uranus     2.992e+11
Neptune    3.097e+11
Pluto      3.152e+11