Obs. : 2017-01-30
Planet	Ly alpha (photons/cm^2/sec)
Mercury    1.864e+11
Venus      1.791e+11
Earth      1.766e+11
Mars       1.791e+11
Jupiter    1.811e+11
Saturn     1.836e+11
Uranus     1.769e+11
Neptune    1.842e+11
Pluto      1.864e+11