Obs. : 2018-01-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.686e+11
Venus      3.749e+11
Earth      3.776e+11
Mars       3.589e+11
Jupiter    3.589e+11
Saturn     3.686e+11
Uranus     3.799e+11
Neptune    3.855e+11
Pluto      3.836e+11