Obs. : 2020-08-03
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.489e+08
Venus      6.628e+08
Earth      6.568e+08
Mars       6.626e+08
Jupiter    6.565e+08
Saturn     6.563e+08
Uranus     6.647e+08
Neptune    6.603e+08
Pluto      6.565e+08