Obs. : 2018-07-08
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.426e+11
Venus      3.460e+11
Earth      3.435e+11
Mars       3.301e+11
Jupiter    3.536e+11
Saturn     3.382e+11
Uranus     3.260e+11
Neptune    3.226e+11
Pluto      3.342e+11